Tootfinder

Discovery of Volatile Gas in the Giant Impact Disk around the 150-Myr old HD 23514
Kate Y. L. Su, Attila Mo\'or, Chengyan Xie, Ilaria Pascucci, George H. Rieke, \'Agnes K\'osp\'al, Mark C. Wyatt, P\'eter \'Abrah\'am, Luca Matr\`a, Zoe Roumeliotis, D. J. Wilner
https://arxiv.org/abs/2506.20919

Discovery of Volatile Gas in the Giant Impact Disk around the 150-Myr old HD 23514
We report the discovery of CO$_2$ gas emission around HD 23514, an F5V star in the $\sim$150 Myr-old Pleiades cluster, hosting one of the rare giant-impact disks with unique mineralogy dominated by silica dust. We show that the dust feature remains stable over several decades, and that the sub-$μ$m grains, which give rise to the $\sim$9 $μ$m feature, are co-spatial with the hot CO$_2$ molecules within the sub-au vicinity of the star. Examining the Spitzer spectrum taken 15 years earlier, we s…

Interior rotation modelling of the $\beta$ Cep pulsator HD 192575 including multiplet asymmetries
V. Vanlaer, D. M. Bowman, S. Burssens, S. Bharati Das, L. Bugnet, S. Mathis, C. Aerts
https://arxiv.org/abs/2506.19948

Interior rotation modelling of the $β$ Cep pulsator HD 192575 including multiplet asymmetries
Rotation plays an important role in stellar evolution. However, the mechanisms behind the transport of angular momentum in stars at various stages of their evolution are not well understood. To improve our understanding of these processes, it is necessary to measure and validate the internal rotation profiles of stars across different stages of evolution and mass regimes. Our aim is to constrain the internal rotation profile of the 12Msun $β$ Cep pulsator HD 192575 from the observed pulsationa…

Heute vor 20 Jahren: Am 27. Juni 2005 wurde im #Kernkraftwerk #FitzPatrick (USA) ein Riss im Torus entdeckt, der zu einer möglichen Gefährdung der Containment-Dichtigkeit führte (INES 1). Ein Notfall wurde ausgerufen und das Werk heruntergefahren, um Reparaturen durchzuführen.

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…

tvOS 26: Neue Funktionen auch für Apple TV HD, aber ohne Liquid Glass
Apple hat seinem tvOS eine ganze Reihe neuer Features spendiert. Zudem gibt es einen neuen Look, aber nicht für alle Geräte.

I see Weird Al has recently uploaded HD versions of many of his videos from the last 30 years.
Both Don McLean and George Lucas reportedly really enjoyed this one.
https://www.youtube.com/watch?v=z4ANN55PjMw

#Tatort #Schimanski | restauriert in HD: Zahn um Zahn (1985)
https://www.

Time-resolved p-mode oscillations for subgiant HD 142091 with NEID at WIYN
Jacob K. Luhn, Paul Robertson, Samuel Halverson, Arvind F. Gupta, Jared C. Siegel, Jason T. Wright, Eric B. Ford, Suvrath Mahadevan, Timothy R. Bedding, Jaime A. Alvarado-Montes, Chad F. Bender, Jiayin Dong, Fred Hearty, Sarah E. Logsdon, Andrew Monson, Michael W. McElwain, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Gudmundur Stefansson, Daniel J. Stevens, Ryan C. Terrien, Sharon Xuesong Wang…

Time-resolved p-mode oscillations for subgiant HD 142091 with NEID at WIYN
Detections of Earth-analog planets in radial velocity observations are limited by stellar astrophysical variability occurring on a variety of timescales. Current state-of-the-art methods to disentangle potential planet signals from intrinsic stellar signals assume that stellar signals introduce asymmetries to the line profiles that can therefore be separated from the pure translational Doppler shifts of planets. Here, we examine this assumption using a time series of resolved stellar p-mode osc…

TV: SD-Abschaltungen gehen weiter
https://stohl.de/wordpress/?p=191370

TV: SD-Abschaltungen gehen weiter
Langsam sollte man auf HD umgestellt haben, denn immer mehr Sender stellen die Ausstrahlung von SD-Kanälen via Satellit ein: SD-Abschaltung geht in die nächste Runde. Mit Ende Juni beendet der kath…

HD 143006: Interferometric Confirmation of Misaligned Protoplanetary Disc with CHARA/MIRCX and VLTI/PIONIER
I. Codron, S. Kraus, J. D. Monnier, S. Marino, C. L. Davies, N. Anugu, T. Gardner, N. Ibrahim, C. Lanthermann, J-B Le Bouquin
https://arxiv.org/abs/2506.19668

HD 143006: Interferometric Confirmation of Misaligned Protoplanetary Disc with CHARA/MIRCX and VLTI/PIONIER
The outer regions of the protoplanetary disc surrounding the T Tauri star HD 143006 show rings, dust asymmetries and shadows. Whilst rings and dust asymmetries can arise from companions and other mechanisms, shadows and misaligned discs in particular are typically attributed to the presence of misaligned planets or stellar-mass companions. To understand the mechanisms that drive these traits, the innermost regions of discs need to be studied. Using CHARA/MIRCX and VLTI/PIONIER, we observed the …

Stellar Ancestry Unlocked: Chemical and Orbital Clues Link Metal Poor Stars to Globular Clusters and the Galaxy's Thick Disk
Gizay Yolalan, Timur \c{S}ahin, Sel\c{c}uk Bilir, Olcay Plevne
https://arxiv.org/abs/2506.10400

Stellar Ancestry Unlocked: Chemical and Orbital Clues Link Metal Poor Stars to Globular Clusters and the Galaxy's Thick Disk
This study presents a detailed chemical, kinematic, and orbital dynamic analysis of five metal poor stars in the solar neighborhood: HD 2665, HD 5916, HD 122956, HD 189349, and HD 218857. Using high-resolution spectroscopic data from the ELODIE and ESPaDOnS instruments, we derived elemental abundances for 29 species (25 elements: C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd, and Sm) via LTE based analysis with ATLAS9 model atmospheres. Notably, we re…

Diego Maradona - Live Is Life 1989 (HD)
https://www.youtube.com/watch?v=RU2J4057cZw

Resonant helical dichroism in twisted dielectric metastructures
Yiyuan Wang, Chi Li, Haoyi Yu, Stefan A. Maier, Jinhui Shi, Haoran Ren, Kirill Koshelev
https://arxiv.org/abs/2506.14173

Resonant helical dichroism in twisted dielectric metastructures
Circular dichroism, arising from interactions with light fields of opposite spin angular momentum, has become a fundamental tool for molecular characterization. Meanwhile, helical dichroism (HD) - the dichroic response to vortex beams carrying opposite orbital angular momentum (OAM) - offers an alternative approach for probing chiral molecules and photonic structures. Previous demonstrations of HD have been limited to non-resonant light-matter interactions with chiral micro- and nanostructures,…

Osiris revisited: Confirming a solar metallicity and low C/O in HD 209458b
N. Bachmann, L. Kreidberg, P. Molli\`ere, D. Deming, S. -M. Tsai
https://arxiv.org/abs/2506.16232

Osiris revisited: Confirming a solar metallicity and low C/O in HD 209458b
HD 209458b is the prototypical hot Jupiter and one of the best targets available for precise atmosphere characterisation. Now that spectra from both Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) are available, we can reveal the atmospheric properties in unprecedented detail. In this study, we perform a new data reduction and analysis of the original HST/WFC3 spectrum, accounting for the wavelength dependence of the instrument systematics that was not considered in previous …

🇺🇦 #NowPlaying on #BBC6Music's #DonLettsCultureClashRadio
Björk:
🎵 I Miss You
#Björk
https://poop.bandcamp.com/track/bjork-i-miss-you-mv-official-music-video-hd
https://open.spotify.com/track/2pDMVFdeAsFI73DDekyvDf

Rage Against The Machine - Killing In the Name (Official HD Video)
https://www.youtube.com/watch?v=bWXazVhlyxQ
Überraschung, die Kommentare sind wieder jüngeren Datums.

Ice sublimation in the dynamic HD 100453 disk reveals a rich reservoir of inherited complex organics: #Disk: https://www.cfa.harvard.edu/news/key-building-block-life-discovered-planet-forming-disk - CfA astronomers have helped discover rare types of methanol, a building block required for life as we know it to form.

Mag ik een koeling op mn foon vele Gbs verplaatsen is de HD van mn foon niet op berekend.. 🙈

New lens flare collection just dropped. https://mastodon.bot/@apod/114663574093410846

This https://arxiv.org/abs/2502.03278 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Fault-Tolerant Control for System Availability and Continuous Operation in Heavy-Duty Wheeled Mobile Robots
When the control system in a heavy-duty wheeled mobile robot (HD-WMR) malfunctions, deviations from ideal motion occur, significantly heightening the risks of off-road instability and costly damage. To meet the demands for safety, reliability, and controllability in HD-WMRs, the control system must tolerate faults to a certain extent, ensuring continuous operation. To this end, this paper introduces a model-free hierarchical control with fault accommodation (MFHCA) framework designed to address…

Foo Fighters - Everlong (Official HD Video)
https://www.youtube.com/watch?v=eBG7P-K-r1Y

It has become relatively easy & affordable to put together an LED Matrix sign. Recently I put together a 6 panel display using 1/8 scan modules for something much brighter than the 1/16 & 1/32 scan modules I usually use. It's bright enough to carry around in high noon sunlight. (I wish it were brighter still)
For past projects with realtime graphics, I've used hzeller's raspberry pi library. Here I used the Huidu HD-D16 controller board that seems to be ARM FPGA …

Aus irgendeinem Grund ist gerade die Sonos-Radio-Station "The Lighthouse", über die Brian Eno jede Menge unveröffentlichte Tracks abspielen läßt, gratis (man braucht halt ein Sonos-Gerät dazu), und ich höre mich da nun etwas durch.
DJ Food hat das ein paar Monate lang gemacht übrigens, und mitgeschrieben (Stand 2023):
ht…

Brian Eno – The Lighthouse, what’s on it?
I’ve been compiling this, off and on, all year, while listening to the 340+ unreleased tracks on Brian Eno‘s Sonos HD radio station, The Lighthouse. If I had the phone nearby I’d check what’s playing, make a note of the track number and year and write a short description. I was intrigued to see how often tracks repeated (not very often), how long it would take me to hear all of them (over 6 months) and what the ratio of good to average to bad was. It became quite addictive as I’d fill…

This https://arxiv.org/abs/2411.10596 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

A minimalistic representation model for head direction system
We present a minimalistic representation model for the head direction (HD) system, aiming to learn a high-dimensional representation of head direction that captures essential properties of HD cells. Our model is a representation of rotation group $U(1)$, and we study both the fully connected version and convolutional version. We demonstrate the emergence of Gaussian-like tuning profiles and a 2D circle geometry in both versions of the model. We also demonstrate that the learned model is capable…

Pga rea och fascination för den jRPG:ns besatthet av judisk (och övrig "västerländsk" mystik passar jag på att faktiskt köpa spelen "Elohim Eternal: The Babel Code" och "El Shaddai ASCENSION OF THE METATRON HD Remaster"

Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster
Christopher A. Danner, Eric L. Sandquist, Gail H. Schaefer, Luigi R. Bedin, Christopher D. Farrington, Cyprien Lanthermann, Stefan Kraus, Robert Klement, Narsireddy Anugu, John D. Monnier, Jerome A. Orosz, Isabelle Codron, Tyler Gardner, Mayra Gutierrez, Benjamin R. Setterholm, Jeremy Jones, Becky Flores
…

Precise Age For The Binary HD 21278 In The Young Alpha Persei Cluster
We present a study of the double-lined spectroscopic binary HD 21278 that contains one of the brightest main sequence stars in the young $α$ Persei open cluster. We analyzed new spectra and reanalyzed archived spectra to measure precise new radial velocity curves for the binary. We also obtained interferometric data using the CHARA Array at Mount Wilson to measure the sky positions of the two stars and the inclination of the $\sim$ 2 milliarcsecond orbit. We determine that the two stars have m…

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…

Water ice in the #DebrisDisk around HD 181327: https://arxiv.org/abs/2505.08863 -> NASA Webb Identifies Frozen Water in Young Star System: https://webbtelescope.org/contents/news-releases/2025/news-2025-119

Circumbinary disc interactions and stochastic dust obscuration in the post-asymptotic-giant-branch binary HD 213985
Krystian Ilkiewicz, Lea Planquart, Tomek Kaminski, Hans Van Winckel
https://arxiv.org/abs/2506.07260

Circumbinary disc interactions and stochastic dust obscuration in the post-asymptotic-giant-branch binary HD 213985
HD 213985 is an eccentric binary system with a post-AGB primary and a jet-launching secondary star. We confirm that the system photometric variability is likely due to obscuration by the inner edge of a circumbinary disc, similar to RVb-type RV Tau stars. The system has shown an increase in the orbital variability amplitude in optical photometric bands, along with irregular changes in its shape that often started to appear skewed. Variability in the Na D lines suggests that this behaviour may b…

#HD #4K #1080p #LA #California

A circularly polarized low-frequency radio burst from the exoplanetary system HD 189733
X. Zhang, P. Zarka, J. N. Girard, C. Tasse, A. Loh, E. Mauduit, F. G. Mertens, E. Bonnassieux, C. K. Louis, J-M. Grie{\ss}meier, J. D. Turner, L. Lamy, A. Strugarek, S. Corbel, B. Cecconi, O. Konovalenko, V. Zakharenko, O. Ulyanov, P. Tokarsky, M. Tagger
https://

A circularly polarized low-frequency radio burst from the exoplanetary system HD 189733
We aim to detect low-frequency radio emission from exoplanetary systems, which can provide insights into planetary magnetic fields, star-planet interactions, stellar activity, and exo-space weather. The HD 189733 system, hosting a well-studied hot Jupiter, is a prime target for such searches. We conducted NenuFAR imaging observations in the 15-62 MHz range, in order to cover the entire orbital phase of HD 189733 b. Dynamic spectra were generated for the target and other sources in the field, fo…

Hydroxylated Mg-rich amorphous silicates as catalysts for molecular hydrogen formation in the interstellar medium
V. Mennella, T. Suhasaria, B. Kerkeni, G. Ouerfelli
https://arxiv.org/abs/2506.11596

Hydroxylated Mg-rich amorphous silicates as catalysts for molecular hydrogen formation in the interstellar medium
We present results from an experimental study on the interaction of atomic deuterium with Mg-rich amorphous enstatite and forsterite type silicates. Infrared spectroscopy was used to examine the process. During D atom exposure, deuteroxyl group formation was observed. The cross section for OD group formation, estimated from the OD stretching band intensity with D atom fluence, is 4.2.10^{-18} cm^2 for both silicates. HD (D2) molecules form via D atom abstraction of chemisorbed H(D) atoms from O…

CAKE - The Distance (Official HD Video)
https://www.youtube.com/watch?v=F_HoMkkRHv8

MINDS: Detection of an inner gas disk caused by evaporating bodies around HD 172555
M. Samland, T. Henning, A. Caratti o Garatti, T. Giannini, J. Bouwman, B. Tabone, A. M. Arabhavi, G. Olofsson, M. G\"udel, N. Pawellek, I. Kamp, L. B. F. M. Waters, D. Semenov, E. F. van Dishoeck, O. Absil, D. Barrado, A. Boccaletti, V. Christiaens, D. Gasman, S. L. Grant, H. Jang, T. Kaeufer, J. Kanwar, G. Perotti, K. Schwarz, M. Temmink

MINDS: Detection of an inner gas disk caused by evaporating bodies around HD 172555
Mechanisms such as collisions of rocky bodies or cometary activity give rise to dusty debris disks. Debris disks trace the leftover building blocks of planets, and thus also planetary composition. HD 172555, a stellar twin of beta Pic, hosts a debris disk thought to have resulted from a giant collision. It is known for its extreme mid-infrared silica dust feature, indicating a warm population of silica-rich grains in the asteroid belt (~5 au), cold CO observed by ALMA, and small bodies evaporat…

Orgy - 'Blue Monday' (Music Video) HD
https://www.youtube.com/watch?v=aJZTfl3DmCU

P.O.D. - Boom (Official Music Video) [HD]
https://www.youtube.com/watch?v=lYHA_7vxrgc

"As a patient of a psychologist I would say it has therapeutic value, because it releases something deep inside of me."
CAKE - Short Skirt / Long Jacket (Official HD Video)
https://www.youtube.com/watch?v=X5KmB8Laemg

Eighteen Exoplanet Host Stars from the NPOI Data Archive
Ellyn K. Baines, Jeremy Jones, James H. Clark III, Henrique R. Schmitt, Jordan M. Stone
https://arxiv.org/abs/2506.02934

Eighteen Exoplanet Host Stars from the NPOI Data Archive
During the course of publishing angular diameters from the Navy Precision Optical Interferometer data archive, we found we had data on 17 confirmed exoplanet host stars and one exoplanet candidate (HD 20902/alpha Per). Here, we update our previously published stellar radii with more precise Gaia parallaxes when available, and use our radius and effective temperature measurements to fit each star's mass and age using MIST models. The mass changed by more than 10% for 9 of the 18 stars. Combining…