Tootfinder

Observational Constraints on Evolution of Dust Disc Properties in Upper Scorpius
Paola Pinilla, Anibal Sierra, Nicolas T. Kurtovic, Rossella Anania, Sean Andrews, John Carpenter, Osmar Guerra-Alvarado, Feng Long, Sebastian Marino, Miguel Vioque, Ke Zhang
https://arxiv.org/abs/2509.19442

Observational Constraints on Evolution of Dust Disc Properties in Upper Scorpius
Protoplanetary discs in the Upper Scorpius star-forming region are excellent laboratories to investigate late stages of planet formation. In this work, we analyse the morphology of the dust continuum emission of 121 discs from an ALMA Band 7 survey of the Upper Scorpius region. This analysis is done in the visibility plane, to measure the flux, geometry and characterise potential structures. We compare the results with state-of-the art gas and dust evolution models that include external photoev…

#UkPol #TheGuardian
"Jeremy Corbyn confirms talks about forming new party with Zarah Sultana"

JADES: the chemical enrichment pattern of distant galaxies - silicon depletion and iron enhancement
Yuki Isobe, Roberto Maiolino, Xihan Ji, Francesco D'Eugenio, Charlotte Simmonds, Jan Scholtz, Ignas Juod\v{z}balis, Aayush Saxena, Joris Witstok, Chiaki Kobayashi, Irene Vanni, Stefania Salvadori, Kuria Watanabe, Stephanie Monty, Vasily Belokurov, Anna Feltre, William McClymont, Sandro Tacchella, Mirko Curti, Hannah \"Ubler, St\'ephane Charlot, Andrew J. Bunker, Jacopo Cheva…

JADES: the chemical enrichment pattern of distant galaxies - silicon depletion and iron enhancement
We present gas-phase abundances of carbon (C), $α$-elements (O, Ne, Si, and Ar) and iron (Fe) obtained from stacked spectra of high-$z$ star-forming galaxies with the deep Near Infrared Spectrograph medium-resolution data from the James Webb Space Telescope Advanced Deep Extragalactic Survey. Our 564 sources at $z=4$--7 have a median stellar mass of $\log(M_{*}/M_{\odot})=8.46$ and a median star-formation rate of $\log(\mathrm{SFR}/M_{\odot}\,\mathrm{yr^{-1}})=0.30$, placing them close to the …

Supersolidity in Optically Trapped Polariton Condensates
P. N. Kozhevin, A. D. Liubomirov, R. V. Cherbunin, M. A. Chukeev, I. Yu. Chestnov, A. V. Kavokin, A. V. Nalitov
https://arxiv.org/abs/2507.14585

Supersolidity in Optically Trapped Polariton Condensates
Superfluids under specific conditions can exhibit spontaneous breaking of continuous translation symmetries and form exotic spatially ordered states of matter known as supersolids. Despite its early theoretical prediction, it took over half-a-centrury to experimentally demonstrate the supersolid phase in ultracold atomic Bose-Einstein condensates, forming due to long-range interatomic interactions. Here we propose as a promising new platform for supersolidity exciton-polariton superfluids, conf…

XUE - the CO2-rich terrestrial planet-forming region of an externally irradiated Herbig disk: #planet formation models: https://www.su.se/english/news/unusual-carbon-dioxide-rich-disk-detected-around-young-star-challenges-planet-formation-models-1.841751

A Novel Tunable Controller for Grid Forming Converters towards Critical Services Application
Yangyadatta Tripathy, Barjeev Tyagi
https://arxiv.org/abs/2509.01748 https://…

A Novel Tunable Controller for Grid Forming Converters towards Critical Services Application
This paper demonstrates the key features of a control system applicable to inverter-based resources (IBR), which is based on grid-forming technology. Such resources are classified as grid-forming or grid-following converters based on the type of output with or without grid connection. With rapid growth in the energy sector to adopt carbon-free generation, Grid Forming Converter (GFC) seems suitable for power provision to remote or islanded operation of converters. A fully-fledged bulk power gri…

🌠 Ryugu asteroid research reveals mineral history predating any on Earth
#astronomy

Ryugu asteroid research reveals mineral history predating any on Earth
In 2020, the Hayabusa2 uncrewed spacecraft successfully returned small fragments from the near-Earth asteroid Ryugu, providing the first pristine samples from a carbonaceous asteroid. Grains from those samples were studied at the National Synchrotron Light Source II (NSLS-II), revealing new details into the asteroid's composition and origin. This insight could ultimately help answer big questions about how water and organic matter came to exist on early Earth, forming the building blocks of lif…

MINDS. Strong oxygen depletion in the inner regions of a very low-mass star disk?
Jayatee Kanwar, Inga Kamp, Peter Woitke, Ewine F. van Dishoeck, Thomas Henning, Yao Liu, Till Kaeufer, Beno\^it Tabone, Manuel G\"udel, David Barrado, Aditya M. Arabhavi, Riccardo Franceschi, Marissa Vlasblom
https://arxiv.org/abs/2508.11761

MINDS. Strong oxygen depletion in the inner regions of a very low-mass star disk?
JWST is discovering a plethora of species in planet-forming disks around very low-mass stars such as C2H2, C6H6, C4H2, CH3 etc. The column densities of these species retrieved from 0D slab models are very large, e.g. of the order of $10^{20}$\,cm$^{-2}$. This is indicating a carbon-dominated chemistry in a gas with a high C/O ratio. The disk around 2MASS-J1605321-1993159 (M4.5) is one such source showing a molecular pseudo-continuum of C2H2. Still two oxygen-bearing molecules, CO and CO2 are al…

Discovery of H$\alpha$ Emission from a Protoplanet Candidate Around the Young Star 2MASS J16120668-3010270 with MagAO-X
Jialin Li, Laird M. Close, Feng Long, Jared R. Males, Sebastiaan Y. Haffert, Alycia Weinberger, Katherine Follette, Sean Andrews, John Carpenter, Warren B. Foster, Kyle Van Gorkom, Alexander D. Hedglen, Gregory J. Herczeg, Parker T. Johnson, Maggie Y. Kautz, Jay K. Kueny, Rixin Li, Joshua Liberman, Joseph D. Long, Jennifer Lumbres, Sebastian Marino, Luca Matr`a, Eden …

Discovery of H$α$ Emission from a Protoplanet Candidate Around the Young Star 2MASS J16120668-3010270 with MagAO-X
2MASS J16120668-3010270 (hereafter 2MJ1612) is a young M0 star that hosts a protoplanetary disk in the Upper Scorpious star-forming region. Recent ALMA observations of 2MJ1612 show a mildly inclined disk ($i$=37$^\circ$) with a large dust-depleted gap (R$_\text{cav}\approx$0.4" or 53 au). We present high-contrast H$α$ observations from MagAO-X on the 6.5m Magellan Telescope and new high resolution sub-mm dust continuum observations with ALMA of 2MJ1612. On both 2025 April 13 and 16, we recover…