Tootfinder

The revolution in strong lensing discoveries from Euclid
Natalie E. P. Lines, Tian Li, Thomas E. Collett, Philip Holloway, James W. Nightingale, Karina Rojas, Aprajita Verma, Mike Walmsley
https://arxiv.org/abs/2508.14624

The revolution in strong lensing discoveries from Euclid
Strong gravitational lensing offers a powerful and direct probe of dark matter, galaxy evolution and cosmology, yet strong lenses are rare: only 1 in roughly 10,000 massive galaxies can lens a background source into multiple images. The European Space Agency's Euclid telescope, with its unique combination of high-resolution imaging and wide-area sky coverage, is set to transform this field. In its first quick data release, covering just 0.45% of the full survey area, around 500 high-quality str…

A Panchromatic View of Late-time Shock Power in the Type II Supernova 2023ixf
W. V. Jacobson-Gal\'an, L. Dessart, C. D. Kilpatrick, P. J. Patel, K. Auchettl, S. Tinyanont, R. Margutti, V. V. Dwarkadas, K. A. Bostroem, R. Chornock, R. J. Foley, H. Abunemeh, T. Ahumada, P. Arunachalam, M. J. Bustamante-Rosell, D. A. Coulter, C. Gall, H. Gao, X. Guo, D. O. Jones, J. Hjorth, M. Kaewmookda, M. M. Kasliwal, R. Kaur, C. Larison, N. LeBaron, H. -Y. Miao, G. Narayan, Y. -C. Pan, S. H. Park,…

A Panchromatic View of Late-time Shock Power in the Type II Supernova 2023ixf
We present multi-wavelength observations of the type II supernova (SN II) 2023ixf during its first two years of evolution. We combine ground-based optical/NIR spectroscopy with Hubble Space Telescope (HST) far- and near-ultraviolet spectroscopy and James Webb Space Telescope (JWST) near- and mid-infrared photometry and spectroscopy to create spectral energy distributions of SN 2023ixf at +374 and +620 days post-explosion, covering a wavelength range of ~0.1-30 $μ$m. The multi-band light curve …

Mapping the SO2 Shoreline in Gas Giant Exoplanets
Ian J. M. Crossfield, Eva-Maria Ahrer, Jonathan Brande, Laura Kreidberg, Joshua Lothringer, Caroline Piaulet-Ghorayeb, Jesse Polman, Luis Welbanks, James Kirk, Diana Powell, Niloofar Khorshid
https://arxiv.org/abs/2509.14318

Mapping the SO2 Shoreline in Gas Giant Exoplanets
JWST has revealed sulfur chemistry in giant exoplanet atmospheres, where molecules such as SO2 trace photochemistry, metallicity, and formation and migration. To ascertain the conditions that determine whether (or how much) SO2, H2S, and other sulfur-bearing species are present in exoplanet atmospheres, we present a grid of planetary atmospheres covering metallicities from 0.3-1000x Solar and temperatures from 250-2050 K. These models map out the 'SO2 shoreline,' the region of metallicity and i…

Sounds like you can now pay to have all your data sent through Israeli intelligence if that’s what does it for you.
#expressVPN #VPN #israel

The Type II SN 2025pht in NGC 1637: A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a Supernova Progenitor Star
Charles D. Kilpatrick, Aswin Suresh, Kyle W. Davis, Maria R. Drout, Ryan J. Foley, Alexander Gagliano, Wynn V. Jacobson-Galan, Ravjit Kaur, Kirsty Taggart, Jason Vazquez
https://arxiv.org/abs/2…

The Type II SN 2025pht in NGC 1637: A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a Supernova Progenitor Star
We present follow-up imaging and spectroscopy and pre-explosion imaging of supernova (SN) 2025pht located in NGC 1637 at 12 Mpc. Our spectroscopy shows that SN 2025pht is a Type II SN with broad lines of hydrogen and with minimal line-of-sight extinction inferred from Na I D absorption. NGC 1637 was the target of several epochs of Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) imaging covering the site of SN 2025pht from 31 to 0.7 yr prior to discovery. Using a follow-up HST…

'Minimalismus' #FotoVorschlag 'Minimalism'
Ah well, that sounds like a #winter #photo that I took when I came back down from a mountain and entered the fog.
It was just so…

I watched "Sunset Boulevard" (1950), directed by Billy Wilder. I don't know of any film like this one. It's a great film, and it draws you into a whole, stifling little world. Honestly, it's harder for me to watch these days, but it's no less brilliant. Among Von Stroheim's performances, I would rank this just below "Grand Illusion".

I just realized that #TimMinchin @… has an account here, a good entertainer for the fediverse to follow and encourage. We saw him on tour in the UK earlier this year, and it’s a lovely show, covering his career over the last 20 or so years.

The JWST Weather Report: retrieving temperature variations, auroral heating, and static cloud coverage on SIMP-0136
Evert Nasedkin, Merle Schrader, Johanna M. Vos, Beth Biller, Ben Burningham, Nicolas B. Cowan, Jacqueline Faherty, Eileen Gonzales, Madeline B. Lam, Allison M. McCarthy, Philip S. Muirhead, Cian O'Toole, Michael K. Plummer, Genaro Su\'arez, Xianyu Tan, Channon Visscher, Niall Whiteford, Yifan Zhou

The JWST Weather Report: retrieving temperature variations, auroral heating, and static cloud coverage on SIMP-0136
SIMP-0136 is a T2.5 brown dwarf whose young age ($200\pm50$~Myr) and low mass ($15\pm3$~M$_{\rm Jup}$) make it an ideal analogue for the directly imaged exoplanet population. With a 2.4 hour period, it is known to be variable in both the infrared and the radio, which has been attributed to changes in the cloud coverage and the presence of an aurora respectively. To quantify the changes in the atmospheric state that drive this variability, we obtained time-series spectra of SIMP-0136 covering on…

The watery atmosphere of HD~209458~b revealed by joint $K$- and $L$-band high-resolution spectroscopy
Luke Finnerty, Julie Inglis, Michael P. Fitzgerald, Daniel Echeverri, Nemanja Jovanovic, Dimitri Mawet, Geoffrey A. Blake, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Katelyn Horstman, Chih-Chun Hsu, Joshua Liberman, Ronald A. L\'opez, Evan Morris, Jacklyn Pezzato-Rovner, Jean-Baptiste Ruffio, Ben Sappey, Tobias Schofield, An…

The watery atmosphere of HD~209458~b revealed by joint $K$- and $L$-band high-resolution spectroscopy
We present a joint analysis of high-resolution $K$- and $L$-band observations of the benchmark hot Jupiter \hdb\ from the Keck Planet Imager and Characterizer (KPIC). One half night of observations were obtained in each bandpass covering similar pre-eclipse phases. The two epochs were then jointly analyzed using our atmospheric retrieval pipeline based on \petit\ to constrain the atmospheric pressure-temperature profile and chemical composition. Consistent with recent results from \textit{JWST}…