Tootfinder

Deep imaging of the galaxy Malin 2 shows new faint structures and a candidate satellite dwarf galaxy
Junais, Ignacio Ruiz Cejudo, Sergio Guerra Arencibia, Ignacio Trujillo, Miguel R. Alarcon, Miquel Serra-Ricart, Johan H. Knapen, Pierre-Alain Duc
https://arxiv.org/abs/2508.07930

Deep imaging of the galaxy Malin 2 shows new faint structures and a candidate satellite dwarf galaxy
Giant Low Surface Brightness (GLSB) galaxies are extreme disk systems with exceptionally large sizes and low stellar densities. Their formation and evolution remain poorly constrained due to the challenges of detecting their faint disks. We present deep, multi-band optical imaging of Malin 2, a prototypical GLSB galaxy, with the newly commissioned Two-meter Twin Telescope (TTT) at the Teide Observatory. Our $g$, $r$, and $i$-band data reach surface brightness depths of 30.3, 29.5, and 28.2 mag …

Exoplanet: Erdähnliche Atmosphäre nach Analyse bei TRAPPIST-1e noch möglich
Um TRAPPIST-1 kreisen gleich sieben Gesteinsplaneten. Das Weltraumteleskop James Webb hat jetzt einen der spannendsten ins Visier genommen und weckt Neugier.

Characterizing Supernovae Host Galaxies with FrankenBlast: A Scalable Tool for Transient Host Galaxy Association, Photometry, and Stellar Population Modeling
Anya E. Nugent, V. Ashley Villar, Alex Gagliano, David O. Jones, Asaf Horowicz, Kaylee de Soto, Bingjie Wang, Ben Margalit
https://arxiv.org/abs/2509.08874

Characterizing Supernovae Host Galaxies with FrankenBlast: A Scalable Tool for Transient Host Galaxy Association, Photometry, and Stellar Population Modeling
We present FrankenBlast, a customized and improved version of the Blast web application. FrankenBlast associates transients to their host galaxies, performs host photometry, and runs a innovative SED fitting code to constrain host stellar population properties--all within minutes per object. We test FrankenBlast on 14,432 supernovae (SNe), ~half of which are spectroscopically-classified, and are able to constrain host properties for 9262 events. When contrasting the host stellar masses ($M_*$),…

Forward Industries raised $1.65B via a private investment in a PIPE offering led by Galaxy, Jump, and Multicoin to start a Solana asset treasury strategy (Adam James/The Block)
https://www.theblock.co/post/369776/galaxy-jump-multicoin-solana-treasury-2

JWST Discovery of Strong Lensing from a Galaxy Cluster at Cosmic Noon: Giant Arcs and a Highly Concentrated Core of XLSSC 122
Kyle Finner, Sangjun Cha, Zachary P. Scofield, M. James Jee, Yu-heng Lin, Hyungjin Joo, Hyosun Park, Takahiro Morishita, Andreas Faisst, Bomee Lee, Wuji Wang, Ranga-Ram Chary
https://arxiv.org/abs/2508.08356

JWST Discovery of Strong Lensing from a Galaxy Cluster at Cosmic Noon: Giant Arcs and a Highly Concentrated Core of XLSSC 122
Our observations with the James Webb Space Telescope have made the remarkable discovery of strong gravitational lensing arcs from XLSSC 122 ($z=1.98$) - setting the record for the most distant galaxy cluster that exhibits strong lensing. The discovery of giant arcs enables a strong-lensing analysis and a measurement of the concentration of the dark matter halo. We perform a strong-lensing analysis of the cluster and measure the radial projected mass density profile. Our measurements reveal an e…

Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1
Rahul Gopalakrishnan, Soumya Roy, Deepak Kathait, Janmejoy Sarkar, Nived V. N., Durgesh Tripathi, A. N. Ramaprakash, Sami K. Solanki, Sreejith Padinhatteeri, Mahesh Burse, Rushikesh Deogaonkar, Sakya Sinha, Adithya H. N., K. Sankarasubramanian, Dipankar Banerjee, Dibyendu Nandy, Srikant Motamarri, Amit Purohit, Rethika T, Sreenath K R, Priyank…

Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1
The Solar Ultraviolet Imaging Telescope (SUIT) is an instrument onboard Aditya--L1, the first solar space observatory of the Indian Space Research Organization (ISRO), India, launched on September 2, 2023. SUIT is designed to image the Sun in the 200--400 nm wavelength band in eight narrowband and three broadband filters. SUIT's science goals start with observing the solar atmosphere and large-scale continuum variations, the physics of solar flares in the NUV region, and many more. The paper el…

YSES 2b is a background star: Differential astrometric M-dwarf measurements in time
Matthew Kenworthy, Tomas Stolker, Jens Kammerer, William Balmer, Arthur Vigan, Sylvestre Lacour, Gilles Otten, Eric Mamajek, Christian Ginski, Mathias Nowak, Steven Martos, Jason Wang, Emily Rickman, Markus Janson, Alexander Bohn, Mariangela Bonavita
https://

YSES 2b is a background star: Differential astrometric M-dwarf measurements in time
We wish to confirm the nature of YSES 2b, a purportedly faint companion of the young star YSES 2. We used on-sky observations from SPHERE and GRAVITY to measure the astrometric position of 2b with respect to the star YSES 2, and examined the competing hypotheses of (i) a bound substellar companion versus (ii) a distant unrelated background source with a non-zero proper motion. YSES 2b appears to be a late-type M-dwarf star over 2 kiloparsecs behind the star YSES 2. It has a transverse velocity …

Noch einige der zuletzt hier besonders häufig geteilten #News:
Wie unsere Erde: Exoplanet TRAPPST-1e könnte eine sekundäre Atmosphäre haben

Galaxy Metallicity Gradients in the Reionization Epoch from the FIRE-2 Simulations
Xunda Sun, Xin Wang, Fangzhou Jiang, Houjun Mo, Luis C. Ho, Qianqiao Zhou, Xiangcheng Ma, Hu Zhan, Andrew Wetzel, Russell L. Graf, Philip F. Hopkins, Dusan Keres, Jonathan Stern
https://arxiv.org/abs/2510.08997

Galaxy Metallicity Gradients in the Reionization Epoch from the FIRE-2 Simulations
We employ the high-redshift suite of FIRE-2 cosmological hydrodynamic zoom-in simulations to investigate the evolution of gas-phase metallicity radial gradients in galaxies in the epoch of reionization (EoR). Our sample consists of 22 galaxies spanning the redshift range $z \sim 10-5$. We find that galaxies at $z\sim10$ exhibit a median metallicity gradient of $-0.15\,\mathrm{dex\cdot kpc^{-1}}$ with substantial scatter, which gradually flatten to $-0.1\,\mathrm{dex\cdot kpc^{-1}}$ at $z\sim6$,…

Frequent Extreme Galaxy-scale Outflows among Luminous Early Quasars
Weizhe Liu, Xiaohui Fan, Huan Li, Richard Green, Jinyi Yang, Xiangyu Jin, Jianwei Lyu, Maria Pudoka, Yongda Zhu, Eduardo Banados, Silvia Belladitta, Thomas Connor, Tiago Costa, Roberto Decarli, Anna-Christina Eilers, Hyunsung Jun, Madeline A. Marshall, Chiara Mazzucchelli, Jan-Torge Schindler, Yue Shen, Sylvain Veilleux, Julien Wolf, Huanian Zhang, Mingyang Zhuang, Siwei Zou, Mingyu Li

Frequent Extreme Galaxy-scale Outflows among Luminous Early Quasars
The existence of abundant post-starburst/quiescent galaxies just $\sim$1-2 Gyrs after the Big Bang challenges our current paradigm of galaxy evolution. Cosmological simulations suggest that quasar feedback is likely the most promising mechanism responsible for such rapid quenching. Here we report a high detection rate (6/27) of exceptionally fast and powerful galaxy-scale outflows traced by [O III] emission in z $\sim$ 5-6 luminous quasars as revealed by the James Webb Space Telescope (JWST), w…