Tootfinder

Brown is celebrating 60 years of pioneering research in planetary science. An amazing list of speakers from great scientists to great communicators (like Andrew Chaikin, Emily Lakdawalla). Free!
https://events.brown.edu/earth-environ

Brown in Orbit: 60+ Years of Planetary Sciences at Brown
Join the Department of Earth, Environmental and Planetary Sciences at Brown for a two-day symposium of the Planetary Sciences and Brown’s leaders...

Radio prospects of extrasolar aurorae polaris as a probe of planetary magnetism
Asaf Kaya, Tansu Daylan
https://arxiv.org/abs/2506.04604 https://

Radio prospects of extrasolar aurorae polaris as a probe of planetary magnetism
Magnetized exoplanets are expected to emit auroral cyclotron radiation in the radio regime due to the interactions between their magnetospheres, the interplanetary magnetic field, and the stellar wind. Prospective extrasolar auroral emission detections will constrain the magnetic properties of exoplanets, allowing the assessment of the planets' habitability and their protection against atmospheric escape by photoevaporation, enhancing our understanding of exoplanet formation and demographics. W…

This https://arxiv.org/abs/2505.09833 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Learning Rock Pushability on Rough Planetary Terrain
In the context of mobile navigation in unstructured environments, the predominant approach entails the avoidance of obstacles. The prevailing path planning algorithms are contingent upon deviating from the intended path for an indefinite duration and returning to the closest point on the route after the obstacle is left behind spatially. However, avoiding an obstacle on a path that will be used repeatedly by multiple agents can hinder long-term efficiency and lead to a lasting reliance on an ac…

The #interstellar #comet #ATLAS with a 2-meter telescope, from the AT "Deep g'-band Imaging of Interstellar Comet 3I/ATLAS from the Two-meter Twin Telescope (TTT)" https://www.astronomerstelegram.org/?read=17264 - other observations were reported in https://www.astronomerstelegram.org/?read=17263 ("Interstellar Interloper C/2025 N1 is Active"), and there are a short JPL video at https://www.youtube.com/watch?v=-vzafaw0t08 and ESA and NASA press releases in https://www.esa.int/Space_Safety/Planetary_Defence/ESA_tracks_rare_interstellar_comet and https://science.nasa.gov/blogs/planetary-defense/2025/07/02/nasa-discovers-interstellar-comet-moving-through-solar-system/

Experimental Exclusion of Planetary Mass Primordial Black Hole Mergers
William M. Campbell, Leonardo Mariani, Michael E. Tobar, Maxim Goryachev
https://arxiv.org/abs/2506.03609

Experimental Exclusion of Planetary Mass Primordial Black Hole Mergers
The multi-mode acoustic gravitational wave experiment (MAGE) is a high-frequency gravitational wave detection experiment featuring cryogenic quartz bulk acoustic wave resonators operating as sensitive strain antennas in the MHz regime. After 61 days of non-continuous data collection, we present bounds on the observable merger rate density of primordial black hole binary systems of chirp mass $1.2\times10^{-4}M_\odot<\mathcal{M}<1.7\times10^{-9}M_\odot$. The maximum achieved limit on the merger …

Search for binarity in Asymptotic Giant Branch stars utilizing the future Chinese Space Station Telescope (CSST)
Zhi-Meng Li, Yong Zhang
https://arxiv.org/abs/2506.05159

Search for binarity in Asymptotic Giant Branch stars utilizing the future Chinese Space Station Telescope (CSST)
Binary systems in the Asymptotic Giant Branch (AGB) phase are widely recognized as a leading theoretical framework underpinning the observed asymmetric morphologies of planetary nebulae. However, the detection of binary companions in AGB systems is severely hampered by the overwhelming brightness and variability of the evolved primary star, which dominate the photo-metric and spectroscopic signatures. Ultraviolet (UV) excess emission has been proposed as a candidate diagnostic for the presence …

Detecting and characterising the magnetic field of exoplanets
A. Strugarek, S. V. Berdyugina, V. Bourrier, J. A. Caballero, J. J. Chebly, R. Fares, A. Fludra, L. Fossati, A. Garc\'ia Mu\~noz, L. Gkouvelis, C. Gourv\`es, J. L. Grenfell, R. D. Kavanagh, K. G. Kislyakova, L. Lamy, A. F. Lanza, C. Moutou, D. Nandy, C. Neiner, A. Oklop\v{c}i\'c, A. Paul, V. R\'eville, D. Rodgers-Lee, E. L. Shkolnik, J. D. Turner, A. A. Vidotto, F. Yang, P. Zarka

Detecting and characterising the magnetic field of exoplanets
Magnetic fields play a crucial role in planetary evolution and habitability. While the intrinsic magnetic fields of solar system planets are relatively well understood, the magnetic properties of exoplanets remain largely unconstrained, despite their potential ubiquity. Detecting exoplanetary magnetic fields is essential to advancing our understanding of planetary habitability beyond the solar system. This paper focuses on two promising spectropolarimetric techniques for detecting magnetic fiel…

Study finds planetary waves linked to wild summer weather have tripled since 1950 https://phys.org/news/2025-06-planetary-linked-wild-summer-weather.html
Study finds planetary waves linked to wild summer weather have tripled since 1950

Study finds planetary waves linked to wild summer weather have tripled since 1950
Climate change has tripled the frequency of atmospheric wave events linked to extreme summer weather in the last 75 years and that may explain why long-range computer forecasts keep underestimating the surge in killer heat waves, droughts and floods, a new study says.

[2025-06-06 Fri (UTC), 8 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
#toXiv_bot_toot

NASA’s Goddard Institute for Space Studies (GISS)
has been a small-but-mighty source of world-changing scientific research for more than a half-century.
NASA scientists first moved into the building,
which another federal agency leases from GISS’s institutional partner, Columbia University, in 1966.
Last month, at the behest of the Trump administration,
NASA officials told GISS it had to move out before the end of May.
In response, more than 100 staffer…

NASA’s Goddard Institute for Space Studies Faces Eviction under Trump Plan
Since 1966 NASA’s Goddard Institute for Space Studies has been at the forefront of Earth and planetary science from its location in upper Manhattan. Now a Trump administration directive is ejecting its scientists to parts unknown

Recently, the German Society for Planetary Research was founded in #Münster. Congratulations! Web page and press release: https://www.planet-dgp.de 🔭
@…

[2025-07-07 Mon (UTC), no new articles found for astro-ph.EP Earth and Planetary Astrophysics]
toXiv_bot_toot

Model for the Thermodynamics of Iron at High Pressures Near Melting
Rann Shikler, Noya Dimanstein Firman, Yinon Ashkenazy
https://arxiv.org/abs/2506.03386 …

Model for the Thermodynamics of Iron at High Pressures Near Melting
The Fe pressure-temperature phase diagram and its melting line have a wide range of applications, including providing constraints for iron-core planetary models. We propose an equation of state (EOS) model based on the interstitial theory of simple condensed matter (ITCM), as suggested by A.V. Granato. When applied to Fe, this model enables the extrapolation of measured melting lines to the conditions of the Earth's inner core boundary (ICB). The ITCM describes the solid-liquid phase transition…

'‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study"
#Oceans #Environment

Global ocean acidification has passed safe planetary boundary threshold: Study https://news.mongabay.com/short-article/2025/06/global-ocean-acidification-has-passed-safe-planetary-boundary-threshold-study/

Global ocean acidification has passed safe planetary boundary threshold: Study
A new assessment finds that the world’s oceans crossed the safe threshold for acidification in 2020, breaching a key planetary boundary and posing serious threats to marine life. Ocean acidification is caused when excess atmospheric carbon dioxide, resulting from human activities like burning fossil fuels, dissolves in seawater, forming carbonic acid that increases the water’s […]

Bevan M. French (1937-2025) :: Meteoritical Society
Bevan worked on impact science "at a time when impacts on the Earth were not considered mainstream – or even possible." #geology
https://meteo…

Bevan M. French (1937-2025)
Bevan French is most widely known for his pioneering work in planetary science and the field of impact cratering. He was one of the early workers on terrestrial impact materials along with Gene Shoemaker, Nick Short, Richard Grieve, Dieter Stöffler, Ed Chao, and others, at a time when impacts on the Earth were not considered mainstream – or even possible. Throughout his career Bevan was a champion for impact science, particularly centered on petrography, and geologic observations at terrestr…

The HR 8799 Debris Disc: Shaped by Planetary Migration and a Possible Fifth Outermost Planet
Pedro P. Poblete, Tim D. Pearce, Carolina Charalambous
https://arxiv.org/abs/2507.01589

The HR 8799 Debris Disc: Shaped by Planetary Migration and a Possible Fifth Outermost Planet
Context. The HR 8799 system, hosting four giant planets between a warm and cold debris disc, and an extended dusty tail beyond, serves as an ideal laboratory for studying planetary formation and evolution. The debris discs have been observed across various wavelengths, and the planetary properties are well-constrained. Nonetheless, there are still open questions regarding the role of the planets in shaping the debris discs. Aims. We investigate the system's evolution with the aim of understan…

Der #Säuregehalt der #Ozeane hat laut neuer Analyse bereits die sichere planetare Grenze überschritten.
Besonders in 200 Meter Tiefe sind 60 Prozent des Wassers zu stark #versauert. Das…

Dark matter signatures in cosmic rays
M. Maroudas, A. Argiriou, G. Cantatore, E. Georgiopoulou, M. Karuza, A. Kryemadhi, I. Lazanu, A. Mastronikolis, M. Parvu, Y. K. Semertzidis, I. Tsagris, M. Tsagri, G. Tsiledakis, K. Zioutas
https://arxiv.org/abs/2506.17676

Dark matter signatures in cosmic rays
This study analyzes an 11-year cosmic ray dataset of positrons and antiprotons for planetary dependencies related to gravitationally focused dark matter streams. By projecting event timestamps onto planetary heliocentric longitudes, structured flux modulations are found. The results resemble previously reported planetary relationships in solar and terrestrial observables. This supports the possibility that streaming dark matter particles are focused toward Earth by solar system bodies, includin…

Climatology of Mars Topside Ionosphere during Solar Cycles 24 and 25 using MAVEN Dataset of 2015-2024
Lot Ram, Chanchal Singh, Diptiranjan Rout, Aadarsh Raj Sharma, Sumanta Sarkhel
https://arxiv.org/abs/2507.02368

Climatology of Mars Topside Ionosphere during Solar Cycles 24 and 25 using MAVEN Dataset of 2015-2024
The Mars ambient space environment evolves with the varying solar activity. Understanding the Martian space environment, particularly the topside ionosphere across different phases of Solar Cycles (SC) 24 \& 25 remains a key research gap in planetary ionospheric science. In this study, we utilized the NASA Mars Atmosphere and Volatile EvolutioN (MAVEN) mission data (150-500 km) from Martian years 32-38 (2015-2024) during solar quiet-time. This study investigated the behavior of topside ionosphe…

VLM-Empowered Multi-Mode System for Efficient and Safe Planetary Navigation
Sinuo Cheng, Ruyi Zhou, Wenhao Feng, Huaiguang Yang, Haibo Gao, Zongquan Deng, Liang Ding
https://arxiv.org/abs/2506.16703

VLM-Empowered Multi-Mode System for Efficient and Safe Planetary Navigation
The increasingly complex and diverse planetary exploration environment requires more adaptable and flexible rover navigation strategy. In this study, we propose a VLM-empowered multi-mode system to achieve efficient while safe autonomous navigation for planetary rovers. Vision-Language Model (VLM) is used to parse scene information by image inputs to achieve a human-level understanding of terrain complexity. Based on the complexity classification, the system switches to the most suitable naviga…

Deep survey of millimeter RRLs towards the planetary nebulae IC 418 and NGC 7027
Teresa Huertas-Rold\'an, Javier Alcolea, D. An\'ibal Garc\'ia-Hern\'andez, Daniel Tafoya, J. Pablo Fonfr\'ia, J. Jairo D\'iaz-Luis, Arturo Manchado, Valent\'in Bujarrabal, Ransel Barzaga, Marco A. G\'omez-Mu\~noz
https://

Deep survey of millimeter RRLs towards the planetary nebulae IC 418 and NGC 7027
The circumstellar environments of PNe are wonderful chemically rich astrophysical laboratories in which the ionization of atoms and the formation of simple and complex molecules can be studied. The new high-sensitivity receivers open the possibility to carry out deep observations, essential to unveil weak atomic and molecular spectra in the mm range. The main goal of this work is to study the emission lines detected in the spectra of the bright C-rich PNe IC 418 and NGC 7027 and to identify all…

Advanced System Engineering Approaches to Emerging Challenges in Planetary and Deep-Space Exploration
J. de Curt\`o, Cristina LiCalzi, Julien Tubiana Warin, Jack Gehlert, Brian Langbein, Alexandre Gamboa, Chris Sixbey, William Maguire, Santiago Fern\'andez, \'Alvaro Maestroarena, Alex Brenchley, Logan Maroclo, Philemon Mercado, Joshua DeJohn, Cesar Velez, Ethan Dahmus, Taylor Steinys, David Fritz, I. de Zarz\`a

Advanced System Engineering Approaches to Emerging Challenges in Planetary and Deep-Space Exploration
This paper presents innovative solutions to critical challenges in planetary and deep-space exploration electronics. We synthesize findings across diverse mission profiles, highlighting advances in: (1) MARTIAN positioning systems with dual-frequency transmission to achieve $\pm$1m horizontal accuracy; (2) artificial reef platforms for Titan's hydrocarbon seas utilizing specialized sensor arrays and multi-stage communication chains; (3) precision orbital rendezvous techniques demonstrating nove…

Three Hot Jupiters transiting K-dwarfs with a significant heavy element mass
Y. G. C. Frensch, F. Bouchy, G. Lo Curto, S. Ulmer-Moll, S. G. Sousa, N. C. Santos, K. G. Stassun, C. N. Watkins, H. Chakraborty, K. Barkaoui, M. Battley, W. Ceva, K. A. Collins, T. Daylan, P. Evans, J. P. Faria, C. Farret Jentink, E. Fontanet, E. Frid\'en, G. Furesz, M. Gillon, N. Grieves, C. Hellier, E. Jehin, J. M. Jenkins, L. K. W. Kwok, D. W. Latham, B. Lavie, N. Law, A. W. Mann, F. Murgas, E. Palle, …

Three Hot Jupiters transiting K-dwarfs with a significant heavy element mass
Albeit at a lower frequency than around hotter stars, short-period gas giants around low-mass stars ($T_\mathrm{eff} < 4965$ K) do exist, despite predictions from planetary population synthesis models that such systems should be exceedingly rare. By combining data from TESS and ground-based follow-up observations, we seek to confirm and characterize giant planets transiting K dwarfs, particularly mid/late K dwarfs. Photometric data were obtained from the TESS mission, supplemented by ground-bas…

Historical Contingencies Steer the Topology of Randomly Assembled Graphs
Cole Mathis, Harrison B. Smith
https://arxiv.org/abs/2507.00335 https://

Historical Contingencies Steer the Topology of Randomly Assembled Graphs
Graphs are used to represent and analyze data in domains as diverse as physics, biology, chemistry, planetary science, and the social sciences. Across domains, random graph models relate generative processes to expected graph properties, and allow for sampling from distinct ensembles. Here we introduce a new random graph model, inspired by assembly theory, and characterize the graphs it generates. We show that graphs generated using our method represent a diverse ensemble, characterized by a br…

This https://arxiv.org/abs/2501.17600 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_eco…

Towards post-growth policymaking: Barriers and enablers for wellbeing economy and Doughnut economics government initiatives
Providing wellbeing for all while safeguarding planetary boundaries may require governments to pursue post-growth policies. To understand how post-growth policymaking can be fostered, we examine wellbeing economy and Doughnut economics government initiatives across governance scales in Europe, New Zealand, and Canada. To identify political dimensions of barriers and enablers as well as priorities for future action, we apply a framework that distinguishes polity, politics, and policy to analyze …

This https://arxiv.org/abs/2505.11224 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Tracing the formation and migration history: molecular signatures in the atmosphere of misaligned hot Jupiter WASP-94Ab using JWST NIRSpec/G395H
The discovery of hot Jupiters that orbit very close to their host stars has long challenged traditional models of planetary formation and migration. Characterising their atmospheric composition - mainly in the form of the carbon-to-oxygen (C/O) ratio and metallicity - can provide insights into their formation locations and evolution pathways. With JWST we can characterise the atmospheres of these types of planets more precisely than previously possible, primarily because it allows us to determi…

Perihelion precession of planetary orbits solved from quantum field theory
Mikko Partanen, Jukka Tulkki
https://arxiv.org/abs/2506.14447 https://

Perihelion precession of planetary orbits solved from quantum field theory
We derive the perihelion precession of planetary orbits using quantum field theory extending the Standard Model to include gravity. Modeling the gravitational bound state of an electron via the Dirac equation of unified gravity [Rep. Prog. Phys. 88, 057802 (2025)], and taking the classical planetary state limit, we obtain orbital dynamics exhibiting a precession in agreement with general relativity. This demonstrates that key general relativistic effects in planetary motion can emerge directly …

The final slides from the #NASA disaster press conference by the Planetary Society. The briefing is being recorded; at https://www.planetary.org/articles/nasa-2026-budget-proposal-in-charts the various charts are already up. 3/3

‘Ticking Time Bomb’ of Ocean Acidification Has Already Crossed Planetary Boundary, Threatening Marine Ecosystems: Study https://www.ecowatch.com/ocean-acidification-planetary-boundary.html

‘Ticking Time Bomb’ of Ocean Acidification Has Already Crossed Planetary Boundary, Threatening Marine Ecosystems: Study
A new study has found that ocean acidification is not only getting worse, but crossed its “planetary boundary” roughly five years ago.

When Servers Meet Species: A Fab-to-Grave Lens on Computing's Biodiversity Impact
Tianyao Shi, Ritbik Kumar, Inez Hua, Yi Ding
https://arxiv.org/abs/2506.20442

When Servers Meet Species: A Fab-to-Grave Lens on Computing's Biodiversity Impact
Biodiversity loss is a critical planetary boundary, yet its connection to computing remains largely unexamined. Prior sustainability efforts in computing have focused on carbon and water, overlooking biodiversity due to the lack of appropriate metrics and modeling frameworks. This paper presents the first end-to-end analysis of biodiversity impact from computing systems. We introduce two new metrics--Embodied Biodiversity Index (EBI) and Operational Biodiversity Index (OBI)--to quantify biodive…

ASKAP-EMU radio continuum detection of planetary nebula NGC 5189: the "Infinity" nebula
A. D. Asher, Z. J. Smeaton, M. D. Filipovi\'c, A. M. Hopkins, J. Th. van Loon, T. J. Galvin, L. A. Barnes
https://arxiv.org/abs/2506.06768

ASKAP-EMU radio continuum detection of planetary nebula NGC 5189: the "Infinity" nebula
We report the radio continuum detection of well known Galactic Planetary Nebula (PN) NGC 5189, observed at 943 MHz during the Australian Square Kilometre Array Pathfinder (ASKAP) Evolutionary Map of the Universe (EMU) survey. Two detections of NGC 5189 have been made during the survey, of better resolution than previous radio surveys. Both measurements of the integrated flux density are consistent with each other, at $S_{\rm 943\,MHz} = 0.33\pm0.03$ Jy, and the spectral luminosity is $L_{\rm{94…

Limn Issue 12: Climate's Interiors is out now online and in print.
Read anywhere with the link below.
https://limn.press/issue/climates-interiors/

Climate's Interiors - Limn
We tend to think about climate solutions from the exterior. Mitigating emissions, climate-proofing crops, erecting solar panels and windmills. But what happens when we shift our perspective? What if we think of climate change from inside cells, bodies, buildings, and systems? This issue of Limn takes the interior as a counterintuitive starting point for thinking about planetary change. Our proposition: Thinking from the interior fundamentally shifts how we understand our warming world and, cruc…

Geo-Somatic Resonance Theory A Vibrational Framework for Sleep as Planetary Entrainment
Brathikan Vijayamohan Mankayarkarasi
https://arxiv.org/abs/2506.14760

Geo-Somatic Resonance Theory A Vibrational Framework for Sleep as Planetary Entrainment
Sleep is commonly studied through neurochemical, evolutionary, and behavioral frameworks, typically emphasizing circadian rhythms and energy conservation. However, these approaches do not fully explain a deeper biophysical question: why does sleep universally involve physical stillness, a lying posture, and disconnection from conscious control? This paper introduces a new hypothesis that sleep is not merely a biological function, but a state of vibrational synchronization between the human body…

The 3D Cosmic Shoreline for Nurturing Planetary Atmospheres
Zach K. Berta-Thompson, Patcharapol Wachiraphan, Catriona Murray
https://arxiv.org/abs/2507.02136

The 3D Cosmic Shoreline for Nurturing Planetary Atmospheres
Various ``cosmic shorelines" have been proposed to delineate which planets have atmospheres. The fates of individual planet atmospheres may be set by a complex sea of growth and loss processes, driven by unmeasurable environmental factors or unknown historical events. Yet, defining population-level boundaries helps illuminate which processes matter and identify high-priority targets for future atmospheric searches. Here, we provide a statistical framework for inferring the position, shape, and …

Multiplicity of young isolated planetary mass objects in Taurus and Upper Scorpius
H. Bouy, G. Duch\^ene, G. Strampelli, J. Aguilar, J. Olivares, D. Barrado, S. N. Raymond, N. Hu\'elamo, M. Tamura, E. Bertin, W. Brandner, J. -C. Cuillandre, P. A. B. Galli, N. Miret-Roig
https://arxiv.org/abs/2506.14380

Multiplicity of young isolated planetary mass objects in Taurus and Upper Scorpius
Free-floating planetary mass objects-worlds that roam interstellar space untethered to a parent star-challenge conventional notions of planetary formation and migration, but also of star and brown dwarf formation. We focus on the multiplicity among free-floating planets. By virtue of their low binding energy (compared to other objects formed in these environments), these low-mass substellar binaries represent a most sensitive probe of the mechanisms at play during the star formation process. We…

Can tidal evolution lead to close-in planetary bodies around white dwarfs II: volcanism and transits
Yuqi Li, Amy Bonsor, Oliver Shorttle
https://arxiv.org/abs/2506.20316

Can tidal evolution lead to close-in planetary bodies around white dwarfs II: volcanism and transits
Planetary material accreted by white dwarfs provides unique insights regarding exoplanetary composition. The evolutionary pathways of planetary bodies around white dwarfs are crucial to understanding the presence of close-in planetary material, observed in the form of pollutants in the atmospheres of white dwarfs and planetary material transiting white dwarfs. Periodic transits around white dwarfs potentially reveal the existence of close-in planetary bodies undergoing dust production. Tidal in…

Interior redox state effects on the stability of secondary atmospheres and observational manifestations: LP 791-18 d as a case study for outgassing rocky exoplanets
Leonardos Gkouvelis, Francisco J. Pozuelos, Thomas Drant, Mohammad Farhat, Meng Tian, Can Ak{\i}n
https://arxiv.org/abs/2506.02188

Interior redox state effects on the stability of secondary atmospheres and observational manifestations: LP 791-18 d as a case study for outgassing rocky exoplanets
Recent advances in space and ground-based facilities now enable atmospheric characterization of a selected sample of rocky exoplanets. These atmospheres offer key insights into planetary formation and evolution, but their interpretation requires models that couple atmospheric processes with both the planetary interior and the surrounding space environment. This work focuses on the Earth-size planet LP791 18d, which is estimated to receive continuous tidal heating due to the orbital configuratio…

Geological Everything Model 3D: A Promptable Foundation Model for Unified and Zero-Shot Subsurface Understanding
Yimin Dou, Xinming Wu, Nathan L Bangs, Harpreet Singh Sethi, Jintao Li, Hang Gao, Zhixiang Guo
https://arxiv.org/abs/2507.00419

Geological Everything Model 3D: A Promptable Foundation Model for Unified and Zero-Shot Subsurface Understanding
Understanding Earth's subsurface is critical for energy transition, natural hazard mitigation, and planetary science. Yet subsurface analysis remains fragmented, with separate models required for structural interpretation, stratigraphic analysis, geobody segmentation, and property modeling-each tightly coupled to specific data distributions and task formulations. We introduce the Geological Everything Model 3D (GEM), a unified generative architecture that reformulates all these tasks as prompt-…

This https://arxiv.org/abs/2504.11918 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Deep learning to improve the discovery of near-Earth asteroids in the Zwicky Transient Facility
We present a novel pipeline that uses a convolutional neural network (CNN) to improve the detection capability of near-Earth asteroids (NEAs) in the context of planetary defense. Our work aims to minimize the dependency on human intervention of the current approach adopted by the Zwicky Transient Facility (ZTF). The target NEAs have a high proper motion of up to tens of degrees per day and thus appear as streaks of light in the images. We trained our CNNs to detect these streaks using three dat…

[2025-06-05 Thu (UTC), 8 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
#toXiv_bot_toot

Thermal Inertia Controls on Titan's Surface Temperature and Planetary Boundary Layer Structure
Sooman Han, Juan M. Lora
https://arxiv.org/abs/2506.23477

Thermal Inertia Controls on Titan's Surface Temperature and Planetary Boundary Layer Structure
Understanding Titan's planetary boundary layer (PBL) -- the lowest region of the atmosphere influenced by surface conditions -- remains challenging due to Titan's thick atmosphere and limited observations. Previous modeling studies have also produced inconsistent estimates of surface temperature, a critical determinant of PBL behavior, often without clear explanations grounded in surface energy balance. In this study, we develop a theoretical framework and apply a three-dimensional dry general …

The star HIP 41378 potentially misaligned with its cohort of long-period planets
S. Grouffal, A. Santerne, V. Bourrier, V. Kunovac, C. Dressing, B. Akinsanmi, C. Armstrong, S. Baliwal, O. Balsalobre-Ruza, S. C. C. Barros, D. Bayliss, I. J. M. Crossfield, O. Demangeon, X. Dumusque, S. Giacalone, C. K. Harada, H. Isaacson, H. Kellermann, J. Lillo-Box, J. Llama, A. Mortier, E. Palle, A. S. Rajpurohit, M. Rice, N. C. Santos, J. V. Seidel, R. Sharma, S. G. Sousa, L. Thomas, E. V. Turtelboom…

The star HIP 41378 potentially misaligned with its cohort of long-period planets
The obliquity between the stellar spin axis and the planetary orbit, detected via the Rossiter-McLaughlin (RM) effect, is a tracer of the formation history of planetary systems. While obliquity measurements have been extensively applied to hot Jupiters and short-period planets, they remain rare for cold and long-period planets due to observational challenges, particularly their long transit durations. We report the detection of the RM effect for the 19-hour-long transit of HIP 41378 f, a temper…

Studying Protoplanets and Protoplanetary Disks with the Habitable Worlds Observatory
Bin B. Ren
https://arxiv.org/abs/2506.24129 https://

Studying Protoplanets and Protoplanetary Disks with the Habitable Worlds Observatory
Since the discovery of the first exoplanet orbiting a Sun-like star, the confirmation of nearly 6000 exoplanets to date - and their diversity - has revolutionized our knowledge of planetary systems in the past three decades. Nevertheless, the majority of these planets are around mature stars (${\gtrsim}1$ Gyr), where the planet birth environments have already dissipated. Indeed, we have only confirmed 2 forming planets (i.e., protoplanets; ${\lesssim}10$ Myr) residing in one single system. In c…

More slides from the Planetary Society presser about the destruction of #NASA by the White House. 2/3

Resupplying planetary debris to old white dwarfs with supernova blast waves
Dimitri Veras
https://arxiv.org/abs/2506.21667 https://ar…

Resupplying planetary debris to old white dwarfs with supernova blast waves
One challenge with explaining how high levels of planetary debris can enrich, or "pollute", old ($\sim$3 Gyr) and very old ($\sim$10 Gyr) white dwarfs is that debris reservoirs deplete on shorter timescales, akin to the solar system's already eviscerated Main Belt and Kuiper Belt. Here, I explore how these extrasolar reservoirs can be resupplied through supernovae that propel distant ($\gtrsim 10^4$ au) dust, sand and pebbles, and potentially boulders and comets, into the inner ($\lesssim 10^2$…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- A Ground-Based Transit Observation of the Long-Period Extremely Low-Density Planet HIP 41378 f
ia, et al.

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
Howard E. Bond (Penn State University, STScI), Dana Patchick (Deep Sky Hunters Consortium), Daniel Stern (MEA Observatory), Jonathan Talbot (Stark Bayou Observatory), John R. Thorstensen (Dartmouth)
https://

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
We report our discovery of a faint nebula surrounding a previously little-studied 15th-mag variable star, ASASSN-19ds, in the southern-hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV). Using new and archival photometry, we confirm that ASASSN-19ds is an eclipsing binary with an orbital period of 0.139 days (3.34 hr). Moreover, its out-of-eclipse brightness shows a "sawtooth" light curve with an amplitude of $\sim$1~mag and an interval between peaks th…

This https://arxiv.org/abs/2402.04990 has been replaced.
link: https://scholar.google.com/scholar?q=a

The possibility for panspermia in the galaxy by means of planetary dust grains
By obtaining the assumption that planetary dust particles can escape from the gravitational attraction of a planet, we consider the possibility for the dust grains to leave the star's system by means of the radiation pressure. By taking the typical dust parameters into account, we consider their dynamics and show that they can reach the deep cosmos, taking part in panspermia. It has been shown that, during $5$ billion years, the dust grains will reach $10^5$ stellar systems, and by taking the D…

This is the non-emotional (!) version of what the Planetary Society thinks about the #NASA FY 2026 Budget Request ... from an ongoing online press conference.

This https://arxiv.org/abs/2504.18299 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Dust-driven vortex cascades originating at water snow regions: A pathway to planetesimal formation
The origin of observed planetary systems, including our Solar System, as well as their diversity, is still an open question. Streaming instability (SI) is an important mechanism for the formation of gravitationally bound planetesimals, which can grow to form planetary embryos and eventually planets. Snow lines in a protoplanetary disk can assist this process, as they can form pressure maxima and promote both dust accumulation and growth. Since the sublimation of a volatile is gradual due to opa…

Can tidal evolution lead to close-in planetary bodies around white dwarfs I: Orbital period distribution
Yuqi Li, Amy Bonsor, Oliver Shorttle, Laura K. Rogers
https://arxiv.org/abs/2506.20301

Can tidal evolution lead to close-in planetary bodies around white dwarfs I: Orbital period distribution
The evolution of planetary systems around white dwarfs is crucial to understanding the presence of planetary material in the atmospheres of white dwarfs. These systems uniquely probe exoplanetary compositions. Periodic signals in the photometry of a handful of white dwarfs suggest material blocking the star, potentially from disintegrating planetesimals. Tidal evolution followed by scattering can bring planetesimals onto close-in orbits that would have been within the envelope of the white dwar…

A systematic study of hot O production and escape from Martian atmosphere in response to enhanced EUV Irradiance from Solar Flares
Chirag Rathi, Dimitra Atri, Dattaraj B. Dhuri
https://arxiv.org/abs/2506.20337

A systematic study of hot O production and escape from Martian atmosphere in response to enhanced EUV Irradiance from Solar Flares
The study of the evolution of Martian atmosphere and its response to EUV irradiation is an extremely important topic in planetary science. One of the dominant effects of atmospheric losses is the photochemical escape of atomic oxygen from Mars. Increasing the magnitude of the irradiation changes the response of the atmosphere. The purpose of the current paper is to analyze the effects of enhanced EUV irradiation on the escape rates of oxygen atoms. We have used the solar flare of 2017 September…

[2025-06-04 Wed (UTC), 14 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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[2025-07-04 Fri (UTC), 15 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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A high mutual inclination system around KOI-134 revealed by transit timing variations
Emma Nabbie, Chelsea X. Huang, Judith Korth, Hannu Parviainen, Su Wang, Alexander Venner, Robert Wittenmyer, Allyson Bieryla, David W. Latham, Gongjie Li, Douglas N. C. Lin, George Zhou
https://arxiv.org/abs/2507.02238

A high mutual inclination system around KOI-134 revealed by transit timing variations
Few planetary systems have measured mutual inclinations, and even less are found to be non-coplanar. Observing the gravitational interactions between exoplanets is an effective tool to detect non-transiting companions to transiting planets. Evidence of these interactions can manifest in the light curve through transit timing variations (TTVs) and transit duration variations (TDVs). Through analysis of Kepler photometry and joint TTV-TDV modeling, we confirm the detection of KOI-134 b, a transit…

Stability of a cluster-disrupted mean-motion resonance (chain) in HR 8799 and PDS 70
Brent Maas (Leiden Observatory), Shuo Huang (Leiden Observatory), Simon Portegies Zwart (Leiden Observatory)
https://arxiv.org/abs/2506.02253

Stability of a cluster-disrupted mean-motion resonance (chain) in HR 8799 and PDS 70
HR~8799 is a planetary system with four planets potentially in a mean-motion resonance chain. It is unclear from the observations if they are in mean-motion resonance. Similarly, PDS~70 has two observed planets also potentially in mean-motion resonance. We simulate HR~8799 and PDS~70 under external perturbations to study their responds if in resonance or mean-motion resonance. We integrate the equations of motion for HR~8799 and PDS~70 starting with either in resonance or in mean-motion resonan…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- CAMPOS II. The onset of protostellar disk substructures and planet formation
Hsieh, Arce, Maureira, Pineda, Segura-Cox, Mardones, Dunham, Li, Offner

Stellar Magnetic Storm Induced Magnetospheric Polarity Reversals: Distinguishing between Unmagnetised and Magnetised Exoplanets
Sakshi Gupta, Souvik Roy, Dibyendu Nandy
https://arxiv.org/abs/2506.02886

Stellar Magnetic Storm Induced Magnetospheric Polarity Reversals: Distinguishing between Unmagnetised and Magnetised Exoplanets
Exoplanetary and planetary environments are forced by stellar activity which manifest through variable radiation, particle and magnetic fluxes, stellar winds, flares and magnetic storms known as coronal mass ejections (CMEs). Recent studies have shown that (exo)planets with intrinsic magnetic fields and magnetospheres respond differently to this stellar forcing compared to planets which lack an intrinsic magnetism; this is borne out by observations in solar system planets. However, detailed inv…

Planetary Obliquity Excitation Through Pre-Main Sequence Stellar Evolution
Sidhant Kumar Suar, Sarah C. Millholland
https://arxiv.org/abs/2506.17843 https:…

Planetary Obliquity Excitation Through Pre-Main Sequence Stellar Evolution
A planet's axial tilt ("obliquity") substantially affects its atmosphere and habitability. It is thus essential to comprehend the various mechanisms that can excite planetary obliquities, particularly at the primordial stage. Here, we explore planetary obliquity excitation induced by the early evolution of the host star. A young, distended star spins rapidly, resulting in a large gravitational quadrupole moment that induces nodal recession of the planet's orbit. As the star contracts and spins …

Characterizing the Dynamics and Chemistry of Transiting Exoplanets with the Habitable World Observatory
Hannah R. Wakeford, Laura C. Mayorga, Joanna K. Barstow, Natasha E. Batalha, Ludmila Carone, Sarah L. Casewell, Theodora Karalidi, Tiffany Kataria, Erin M. May, Michiel Min
https://arxiv.org/abs/2506.22839

Characterizing the Dynamics and Chemistry of Transiting Exoplanets with the Habitable World Observatory
The primary scientific objective of this Habitable Worlds Observatory (HWO) Science Case Development Document (SCDD) is to measure planetary rotation rates of transiting exoplanets to determine the structure, composition, circulation, and aerosol properties of their planetary atmospheres. For this analysis, HWO would obtain spectroscopic phase curves for planets with orbital periods of 5 - 20+ days, to assess tidal locking radius assumptions. Extending phase curve studies out to longer orbital …

Exoplanet Atmospheric Refraction Effects in the Kepler Sample
Dereck-Alexandre Lizotte, Jason Rowe, James Sikora, Michael R. B. Matesic
https://arxiv.org/abs/2507.02126

Exoplanet Atmospheric Refraction Effects in the Kepler Sample
We present an analysis on the detection viability of refraction effects in Kepler's exoplanet atmospheres using binning techniques for their light curves in order to compare against simulated refraction effects. We split the Kepler exoplanets into sub-populations according to orbital period and planetary radius, then search for out-of-transit changes in the relative flux associated with atmospheric refraction of starlight. The presence of refraction effects - or lack thereof - may be used to me…

Clues for Solar System Formation from Meteorites and their Parent Bodies
Bernard Marty, Katherine R. Bermingham, Larry R. Nittler, Sean N. Raymond
https://arxiv.org/abs/2506.02721

Clues for Solar System Formation from Meteorites and their Parent Bodies
Understanding the origin of comets requires knowledge of how the Solar System formed from a cloud of dust and gas 4.567 Gyr ago. Here, a review is presented of how the remnants of this formation process, meteorites and to a lesser extent comets, shed light on Solar System evolution. The planets formed by a process of collisional agglomeration during the first hundred million years of Solar System history. The vast majority of the original population of planetary building blocks (~100 km-scale p…

Connecting Planetary Composition with Formation: a New Paradigm Emerges
Ralph E. Pudritz, Alex J. Cridland, Julie Inglis, Mathew Alessi
https://arxiv.org/abs/2505.22724

Connecting Planetary Composition with Formation: a New Paradigm Emerges
Extensive ground and space based surveys have now characterized the properties of thousands of exoplanets; their radii, masses, orbits around their host stars, and the beginnings of accurate measurements of the chemical compositions of their atmospheres and cores. How are these properties linked to their formation in physically and chemically evolving protoplanetary disks wherein they accrete pebbles, planetesimals, and gas as they undergo migration? To address this challenge, our review assemb…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- Planetesimal Scattering Efficiency of Cold Giant Planet Architectures
Stephen R. Kane, Emma L. Miles

[2025-06-03 Tue (UTC), 9 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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[2025-07-03 Thu (UTC), 11 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data
Robert Royer III, Jason H. Steffen
https://arxiv.org/abs/2506.20654 https…

Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data
Exoplanet surveys like Kepler, TESS, and K2 have shown that planetary systems are common in our galaxy. These surveys, along with several others, have identified thousands of planetary candidates, with more than five thousand having already been confirmed. Many of these planetary systems host multiple planets. As we discover more multiplanet systems, notable trends begin to appear in the data. We use kernel density estimation (KDE) to analyze the period ratios of adjacent planet pairs in multip…

The Narrow Formation Pathway of Hot Saturns: Constraints on Initial Planetary Properties
Minghao Xie, Sheng Jin, Dong-Hong Wu
https://arxiv.org/abs/2505.23148

The Narrow Formation Pathway of Hot Saturns: Constraints on Initial Planetary Properties
The observed exoplanet population exhibits a scarcity of short-period Saturn-mass planets, a phenomenon referred to as the ``hot Saturn desert". This observational scarcity can be utilized to validate the theories regarding the formation and evolution of gas planets. In this study, we conduct large-scale numerical simulations to explore how the initial conditions of gas planets orbiting solar-type and M-dwarf stars influence their evolutionary trajectories in the semi-major axis versus planetar…

Planet formation in chemically diverse and evolving discs -- I. Composition of planetary building blocks
E. Pacetti, E. Schisano, D. Turrini, C. P. Dullemond, S. Molinari, C. Walsh, S. Fonte, U. Lebreuilly, R. S. Klessen, P. Hennebelle, S. L. Ivanovski, R. Politi, D. Polychroni, P. Simonetti, L. Testi
https://arxiv.org/abs/2506.…

Planet formation in chemically diverse and evolving discs -- I. Composition of planetary building blocks
Protoplanetary discs are dynamic environments where the interplay between chemical processes and mass transport shapes the composition of gas and dust available for planet formation. We investigate the combined effects of volatile chemistry - including both gas-phase and surface reactions - viscous gas evolution, and radial dust drift on the composition of planetary building blocks. We explore scenarios of chemical inheritance and reset under varying ionisation conditions and for various dust g…

Star-Planet Interactions: A Computational View
A. A. Vidotto (Leiden Observatory)
https://arxiv.org/abs/2506.00470 https://arxiv.org/…

Star-Planet Interactions: A Computational View
There are several physical processes that mediate the interaction between an exoplanet and its host star, with the four main ones being due to magnetic, particle (stellar outflow), radiative and tidal interactions. These interactions can be observed at different wavelengths, from X-ray to radio. Their strengths depend on the architecture of planetary systems, as well as the age and activity level of the host stars. In particular, exoplanets in close-in orbits and/or orbiting active host stars c…

Dynamical origin of Theia, the last giant impactor on Earth
Duarte Branco, Sean N. Raymond, Pedro Machado
https://arxiv.org/abs/2507.01826 https://

Dynamical origin of Theia, the last giant impactor on Earth
Cosmochemical studies have proposed that Earth accreted roughly 5-10% of its mass from carbonaceous (CC) material, with a large fraction delivered late via its final impactor, Theia (the Moon-forming impactor). Here, we evaluate this idea using dynamical simulations of terrestrial planet formation, starting from a standard setup with a population of planetary embryos and planetesimals laid out in a ring centered between Venus and Earth's orbits, and also including a population of CC planetesima…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- CAMPOS II. The onset of protostellar disk substructures and planet formation
Hsieh, Arce, Maureira, Pineda, Segura-Cox, Mardones, Dunham, Li, Offner

NLTE atmospheric modelling of the ultra-hot Jupiter WASP-178b and comparison with UV and optical observations
L. Fossati, A. G. Sreejith, T. Koskinen, A. Bonfanti, D. Shulyak, F. Borsa, S. P. D. Borthakur, P. E. Cubillos, M. E. Young
https://arxiv.org/abs/2506.01132

NLTE atmospheric modelling of the ultra-hot Jupiter WASP-178b and comparison with UV and optical observations
We model the atmosphere of the ultra-hot Jupiter (UHJ) WASP-178b accounting for NLTE effects and compare synthetic transmission spectra with NUV and optical observations. We use the HELIOS code (LTE) in the lower and the Cloudy code (LTE or NLTE) in the middle and upper atmosphere to compute the temperature-pressure (TP) and abundance profiles. We further use Cloudy to compute the theoretical planetary transmission spectrum both in LTE and NLTE for comparison with observations. We find an isoth…

[2025-06-02 Mon (UTC), 6 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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[2025-07-02 Wed (UTC), 10 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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The ESPRESSO transmission spectrum of HD$\,$189733$\,$b : Extracting the planetary sodium and lithium signatures amid stellar contamination
D. Mounzer, W. Dethier, C. Lovis, V. Bourrier, A. Psaridi, H. Chakraborty, M. Lendl, R. Allart, J. V. Seidel, M. R. Zapatero Osorio, P. Molaro, M. Steiner, D. Ehrenreich, Y. Alibert, I. Carleo, S. Cristiani, J. I. Gonz\'alez Hern\'andez, C. J. A. P. Martins, E. Palle, J. Rodrigues, N. Santos, A. Sozzetti, A. Su\'arez Mascare\~no

The ESPRESSO transmission spectrum of HD$\,$189733$\,$b : Extracting the planetary sodium and lithium signatures amid stellar contamination
While transmission spectroscopy has allowed us to detect many atomic and molecular species in exoplanet atmospheres, the improvement in resolution and signal-to-noise ratio enabled us to become sensitive to planet-occulted line distortions (POLDs) in the spectrum that are induced by center-to-limb variations and the Rossiter-McLaughlin effect. POLDs can bias the interpretation of the transmission spectrum, and it is difficult to correct for them with stellar models. We analyzed two ESPRESSO tra…

The Dynamics of Infall and Accretion Shocks in the Outer Disk
Susan Terebey, Loraine Sandoval Ascencio, Lizxandra Flores-Rivera, Neal Turner, Andrew Barajas
https://arxiv.org/abs/2505.24582

The Dynamics of Infall and Accretion Shocks in the Outer Disk
High-spatial-resolution observations of disks around young stars suggest planetary systems begin forming early, during the protostellar phase (< 1 Myr) when stars accrete most of their mass via infall from the surrounding cloud. During this era shocks are expected to be ubiquitous around the gaseous accretion disk due to supersonic infall that strikes the disk. We investigate the role of shocks using a theoretical and modeling framework we call the shock twist-angle Keplerian (STAK) disk, conne…

Measurements of three exo-planetesimal compositions: a planetary core, a chondritic body, and an icy Kuiper belt analogue
Jamie T. Williams, Boris T. G\"ansicke, Snehalata Sahu, David J. Wilson, Detlev Koester, Andrew M. Buchan, Odette Toloza, Yuqi Li, Jay Farihi
https://arxiv.org/abs/2506.19931

Measurements of three exo-planetesimal compositions: a planetary core, a chondritic body, and an icy Kuiper belt analogue
The study of planetesimal debris accreted by white dwarfs offers unique insights into the composition of exoplanets. Using far-ultraviolet and optical spectroscopy, we have analysed the composition of planetesimals accreted by three metal enriched H-dominated white dwarfs with effective temperatures of T_eff = 20 000 K. WD 0059+257 is accreting an object composed of 71.8 +/- 7.9 per cent Fe and Ni by mass, indicating a large core mass fraction of 69 per cent, similar to that of Mercury. We mode…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- On the Efficacy of Ocean Formation with a Primordial Hydrogen Atmosphere
Darius Modirrousta-Galian, Jun Korenaga

Metal Polluted White Dwarfs with 21 {\mu}m IR excesses from JWST/MIRI: Planets or Dust?
John H. Debes, Sabrina Poulsen, Ashley Messier, Susan E. Mullally, Katherine Thibault, Lo\"ic Albert, Misty Cracraft, \'Erika Le Bourdais, Patrick Dufour, Tom Barclay, J. J. Hermes, Mukremin Kilic, David Lafreni\`ere, Fergal Mullally, William Reach, Elisa Quintana

Metal Polluted White Dwarfs with 21 μm IR excesses from JWST/MIRI: Planets or Dust?
White dwarfs with metal pollution are caused by the accretion of rocky dust from tidally disrupted minor bodies and are signposts for planetary systems. These minor bodies are perturbed by planets that have survived post-main sequence evolution. Open questions exist as to the typical mass of the perturbers and the specific planetary architectures that cause metal pollution. JWST's sensitivity in the mid-IR has opened new doors to deciphering polluted white dwarfs. We present JWST Cycle 1 MIRI i…

[2025-07-01 Tue (UTC), 12 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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Tidal Inflation is Stronger for Misaligned Neptune-Sized Planets Than Aligned Ones
Ritika Sethi, Sarah Millholland
https://arxiv.org/abs/2506.24100 https:/…

Tidal Inflation is Stronger for Misaligned Neptune-Sized Planets Than Aligned Ones
Recent observations have revealed an intriguing abundance of polar-orbiting Neptune-sized planets, many of which exhibit unusually inflated radii. While such misaligned orbits point to a complex dynamical history, the connection between their orbital orientations and planetary structures remains poorly understood. In this study, we analyze a sample of 12 misaligned and 12 aligned planets using structure models that incorporate tidal heating. We use various statistical tests to demonstrate with …

[2025-06-30 Mon (UTC), 5 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- Elastic Planetoids
Bartosz \.Zbik, Andrzej Odrzywo{\l}ek

[2025-05-30 Fri (UTC), 9 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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This https://arxiv.org/abs/2412.08692 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The Spin-Orbit Alignment of 8 Warm Gas Giant Systems
Essential information about the formation and evolution of planetary systems can be found in their architectures -- in particular, in stellar obliquity ($ψ$) -- as they serve as a signature of their dynamical evolution. Here, we present ESPRESSO observations of the Rossiter-Mclaughlin (RM) effect of 8 warm gas giants, revealing that independent of the eccentricities, all of them have relatively aligned orbits. Our 5 warm Jupiters -- WASP-106 b, WASP-130 b, TOI-558 b, TOI-4515 b, and TOI-5027 b…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- Population-level Hypothesis Testing with Rocky Planet Emission Data: A Tentative Trend in the Bri...
Coy, Ih, Kite, Koll, Tenthoff, Bean, Mansfield, Zhang, Xue, Kempton, Wolhfarth, Hu…

A Terminology and Quantitative Framework for Assessing the Habitability of Solar System and Extraterrestrial Worlds
Daniel Apai, Rory Barnes, Matthew M. Murphy, Tim Lichtenberg, Noah Tuchow, Regis Ferriere, Kevin Wagner, Antonin Affholder, Renu Malhotra, Baptiste Journaux, Allona Vazan, Ramses Ramirez, Abel Mendez, Stephen R. Kane, Veronica H. Klawender, NExSS Quantitative Habitability Science Working Group

A Terminology and Quantitative Framework for Assessing the Habitability of Solar System and Extraterrestrial Worlds
The search for extraterrestrial life in the Solar System and beyond is a key science driver in astrobiology, planetary science, and astrophysics. A critical step is the identification and characterization of potential habitats, both to guide the search and to interpret its results. However, a well-accepted, self-consistent, flexible, and quantitative terminology and method of assessment of habitability are lacking. Our paper fills this gap based on a three year-long study by the NExSS Quantitat…

Is Ozone a Reliable Proxy for Molecular Oxygen? II. The impact of N$_2$O on the O$_2$-O$_3$ relationship for Earth-like atmospheres
Thea Kozakis, Jo\~ao M. Mendon\c{c}a, Lars A. Buchhave, Luisa M. Lara
https://arxiv.org/abs/2505.23279

Is Ozone a Reliable Proxy for Molecular Oxygen? II. The impact of N$_2$O on the O$_2$-O$_3$ relationship for Earth-like atmospheres
Molecular oxygen (O2) will be an important molecule in the search for biosignatures in terrestrial planetary atmospheres in the coming decades. In particular, O2 combined with a reducing gas is thought to be strong evidence for disequilibrium caused by surface life. However, there are circumstances where it would be very difficult or impossible to detect O2, in which cases it has been suggested that ozone (O3), the photochemical product of O2, could be used instead. Unfortunately, the O2-O3 rel…

[2025-05-29 Thu (UTC), 7 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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Planetary waves can activate resonant drag instabilities in 3D dusty gaseous discs
Ra\'ul O. Chametla, Yasuhiro Hasegawa, Gennaro D'Angelo
https://arxiv.org/abs/2506.13592

Planetary waves can activate resonant drag instabilities in 3D dusty gaseous discs
Resonant Drag Instabilities (RDIs) in protoplanetary discs are driven by the aerodynamic back-reaction of dust on gas and occur when the relative dust-gas motion resonate with a wave mode intrinsic to the gas fluid. Axisymmetric models indicate that the RDI generates filamentary perturbations, leading to grain clumping and planetesimal formation. Motivated by these findings, we investigate the dust-gas interaction in a non-axisymmetric inviscid protoplanetary disc with an embedded low-mass plan…

Origin of compact exoplanetary systems during disk infall
Raluca Rufu, Robin M. Canup
https://arxiv.org/abs/2505.22806 https://arxiv.…

Origin of compact exoplanetary systems during disk infall
Exoplanetary systems that contain multiple planets on short-period orbits appear to be prevalent in the current observed exoplanetary population, yet the processes that give rise to such configurations remain poorly understood. A common prior assumption is that planetary accretion commences after the infall of gas and solids to the circumstellar disk ended. However, observational evidence indicates that accretion may begin earlier. We propose that compact systems are surviving remnants of plane…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- Reassessing Sub-Neptune Structure, Radii, and Thermal Evolution
Yao Tang, Jonathan J. Fortney, Francis Nimmo, Daniel Thorngren, Kazumasa Ohno, Ruth Murray-Clay

[2025-06-27 Fri (UTC), 8 new articles found for astro-ph.EP Earth and Planetary Astrophysics]
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Heating, Excitation, Dissociation, and Ionization of Molecules by High-Energy Photons in Planetary Atmospheres
Antonio Garc\'ia Mu\~noz, Ewan Bataille
https://arxiv.org/abs/2506.12956

Heating, Excitation, Dissociation, and Ionization of Molecules by High-Energy Photons in Planetary Atmospheres
Photoionization by high-energy photons creates nonthermal electrons with a broad range of energies that heat and chemically transform the atmospheres of planets. The specifics of the interactions are notably different when the gas is atomic or molecular. Motivated by the idea that molecules survive to high altitudes in some exoplanets, we built a model for the energy transfer from nonthermal electrons to the H2O, H2, and O2 molecules. Our calculations show that the primary electrons of energy a…

Replaced article(s) found for astro-ph.EP. https://arxiv.org/list/astro-ph.EP/new
[1/1]:
- Survey-Wide Asteroid Discovery with a High-Performance Computing Enabled Non-Linear Digital Track...
Nathan Golovich, Trevor Steil, Alex Geringer-Sameth, Keita Iwabuchi, Ryan Dozier, …

ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions
J. P. Marshall, S. Hengst, A. Trejo-Cruz, C. del Burgo, J. Milli, M. Booth, J. C. Augereau, E. Choquet, F. Y. Morales, P. Th\'ebault, F. Kemper, V. Faramaz-Gorka, G. Bryden
https://arxiv.org/ab…

ALMA millimetre-wavelength imaging of HD 138965: New constraints on the debris dust composition and presence of planetary companions
HD 138965 is a young A type star and member of the nearby young Argus association. This star is surrounded by a broad, bright debris disc with two temperature components that was spatially resolved at far-infrared wavelengths by Herschel. Here we present ALMA millimetre-wavelength imaging of the cool outer belt. These reveal its radial extent to be $150^{+10}_{-7}$ au with a width ($σ$) of 49$^{+7}_{-6}$ au ($ΔR/R$ = 0.77), at a moderate inclination of 49$\fdeg$9^{+3.3}_{-3.7}$. Due to the li…