Results 91 to 100 of about 826 (184)

An Unusual Short Gamma-Ray Burst with Properties Intermediate Between SGRB and Magnetar Giant Flare Populations

The Astrophysical Journal Letters
A small but important fraction of short gamma-ray bursts (SGRBs) may originate from magnetar giant flares in nearby galaxies, but the extragalactic sample remains scarce.
Yi Wen, Shuo Xiao, Yan-Qiu Zhang, Chen-Wei Wang, Shi-Jie Zhang, Tong-Lei Liao, Yang Zhang, Shi-Qi Wei, Dao-Yi Zhang, Zheng-Huo Jiang, Shao-Wei Xiong, Jun-Jin Peng   +11 more
doaj   +1 more source

New Measurements of Distances to Galaxies in the NGC 1052 Field with the Hubble and James Webb Space Telescopes: Testing the Bullet-dwarf Origin of the Trail

The Astrophysical Journal Letters
NGC 1052-DF2 and DF4 are two ultradiffuse galaxies deficient in dark matter (DM) and reported as part of a remarkable linear trail of dwarf galaxies in the NGC 1052 field.
Yimeng Tang, Gagandeep S. Anand, Aaron J. Romanowsky, Pieter G. van Dokkum, Kevin A. Bundy   +4 more
doaj   +1 more source

Leonessa: An Extremely Metal-poor Galaxy Undergoing Secular Chemical Evolution

The Astrophysical Journal
Extremely metal-poor (XMP) galaxies are systems with gas-phase oxygen abundances below ∼5% solar metallicity (12+log(O/H) ≤ 7.35). These galaxies populate the metal-poor end of the mass–metallicity and luminosity–metallicity relations (MZR and LZR ...
Joseph A. Breneman, Kristen B. W. McQuinn, Alexander Menchaca, Danielle A. Berg, O. Grace Telford, Max J. B. Newman, Andrew Dolphin, Gregory R. Zeimann   +7 more
doaj   +1 more source

88th Annual Meeting of the Meteoritical Society 2026: Abstracts

Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley   +1 more source

Radio Continuum Halos of Seven Nearby Large Galaxies Using uGMRT

The Astrophysical Journal
We present the results of deep radio observations of seven nearby large galaxies observed using the upgraded Giant Metrewave Radio Telescope (uGMRT) 0.3–0.5 GHz receivers with an angular resolution of ∼10″.
Souvik Manna, Subhashis Roy, Tapas Baug
doaj   +1 more source

A Morphological Identification and Study of Radio Galaxies from LoTSS DR2. I. The “Winged” Radio Galaxies

The Astrophysical Journal Supplement Series
We conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-metre Sky Survey.
Soumen Kumar Bera, Taotao Fang, Tapan K. Sasmal, M. Kunert-Bajraszewska, Xuelei Chen, Soumen Mondal   +5 more
doaj   +1 more source

A Comprehensive Study of Morphology and Kinematics in Extended Nebulae Around UV-luminous Quasars at z ≈ 1

The Astrophysical Journal
Gas flows between galaxies and the circumgalactic medium (CGM) play a central role in galaxy evolution and can become observable as giant nebulae when illuminated by quasars. We present an ensemble study of nebulae around 30 UV-luminous quasars at z  ≈ 0.
Zhuoqi (Will) Liu, Sean D. Johnson, Eric F. Bell, Zhijie Qu, Benoît Epinat, Hsiao-Wen Chen, Marc Rafelski, Jennifer I-Hsiu Li, Alexander Beckett, Mandy C. Chen, Sayak Dutta, David DePalma, Gwen C. Rudie, Joop Schaye, Patrick Petitjean, Sebastiano Cantalupo, Elise Fuller, Wolfram Kollatschny, Sebastián López, Nishant Mishra, Sowgat Muzahid, Andrea Travascio, Fakhri S. Zahedy   +22 more
doaj   +1 more source

The Star Formation History and Evolution of the Ultra-Diffuse M81 Satellite F8D1

The Astrophysical Journal
We present deep Hubble Space Telescope (HST) imaging of one of the nearest ultra-diffuse galaxies (UDGs) outside of the Local Group: F8D1, a satellite of M81 known to be tidally disrupting.
Adam Smercina, Eric F. Bell, Benjamin F. Williams, Benjamin N. Velguth, Sarah Pearson, Jeremy Bailin, Tsang Keung Chan, Julianne J. Dalcanton, Roelof S. de Jong, Richard D’Souza, Andrew Dolphin, Puragra Guhathakurta, Kristen B.W. McQuinn, Antonela Monachesi, Colin T. Slater, Elisa Toloba, Daniel R. Weisz, Andrew Wetzel   +17 more
doaj   +1 more source

First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1

The Astrophysical Journal Letters
After over three decades of unsuccessful attempts, we report the first detection of molecular gas emission in Malin 1, the largest spiral galaxy observed to date, and one of the most iconic giant low surface brightness galaxies.
Gaspar Galaz, Jorge González-López, Viviana Guzmán, Hugo Messias, Junais, Samuel Boissier, Benoît Epinat, Peter M. Weilbacher, Thomas Puzia, Evelyn J. Johnston, Philippe Amram, David Frayer, Matìas Blaña, J. Christopher Howk, Michelle Berg, Roy Bustos-Espinoza, Juan Carlos Muñoz-Mateos, Paulo Cortés, Diego García-Appadoo, Katerine Joachimi   +19 more
doaj   +1 more source

The Metallicity Distribution of the Ultra-Faint Dwarf Galaxy Segue 1

The Open Journal of Astrophysics
Ultra-faint dwarf galaxies (UFDs; stellar masses $M_* < 10^5\,M_\odot$) offer unique insights into early chemical evolution in low-mass systems. However, interpreting their metallicity distribution functions (MDFs) has been challenging due to limited ...
Daisy Bissonette, Alexander P. Ji, Joshua D. Simon, Joss Bland-Hawthorn, Anirudh Chiti, Marla Geha, Ting S. Li, Anna Frebel, Alice M. Luna   +8 more
doaj   +1 more source