Results 41 to 50 of about 18,354 (115)

A Census of Compact Elliptical Galaxies in the Coma Cluster

The Astrophysical Journal
Compact elliptical (cE) galaxies are compact stellar systems with stellar masses of 10 ^8 ≤ M _* / M _⊙ ≤ 10 ^10 and radii typically
Aleksandra V. Sharonova, Kirill A. Grishin, Igor V. Chilingarian, Gary A. Mamon, Nelson Caldwell, Daniel Fabricant   +5 more
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A Massive Quiescent Galaxy in a Group Environment at z = 4.53

The Astrophysical Journal
We report on the spectroscopic confirmation of a massive quiescent galaxy at z _spec = 4.53 in the COSMOS field. The object was first identified as a galaxy with suppressed star formation at z _phot ∼ 4.65 from the COSMOS2020 catalog.
Takumi Kakimoto, Masayuki Tanaka, Masato Onodera, Rhythm Shimakawa, Po-Feng Wu, Katriona M. L. Gould, Kei Ito, Shuowen Jin, Mariko Kubo, Tomoko L. Suzuki, Sune Toft, Francesco Valentino, Kiyoto Yabe   +12 more
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The Cosmic Ultraviolet Baryon Survey (CUBS). VIII. Group Environment of the Most Luminous Quasars at z ≈ 1

The Astrophysical Journal
We investigate the group-scale environment of 15 luminous quasars (luminosity L _3000 > 10 ^46 erg s ^−1 ) from the Cosmic Ultraviolet Baryon Survey (CUBS) at redshift z ≈ 1.
Jennifer I-Hsiu Li, Sean D. Johnson, Erin Boettcher, Sebastiano Cantalupo, Hsiao-Wen Chen, Mandy C. Chen, David R. DePalma, Zhuoqi (Will) Liu, Nishant Mishra, Patrick Petitjean, Zhijie Qu, Gwen C. Rudie, Joop Schaye, Fakhri S. Zahedy   +13 more
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Orthogonal Alignment of Galaxy Group Angular Momentum with Cosmic Filament Spines: An Observational Study

The Astrophysical Journal Letters
We investigated the alignment between the angular momenta of galaxy groups and the spines of their associated cosmic filaments. Our results demonstrate a significant tendency for these two orientations to be perpendicular, indicating that the rotation of
Yu Rong, Peng Wang, Xiao-xiao Tang
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The Intracluster Light Analysis of the Most Evolved Systems of Galaxies: Fossil Groups

The Astrophysical Journal Letters
We present the analysis of the intracluster light (ICL) in three fossil groups, RX J085640.72+055347.36, RX J1136+0713, and RX J1410+4145, at z ∼ 0.1. We used two optical broadband filters, F435W and F606W, observed with the Hubble Space Telescope, and ...
Nícolas O. L. de Oliveira, Yolanda Jiménez-Teja, Renato A. Dupke, Eleazar R. Carrasco, Anton M. Koekemoer, Yuanyuan Su, Jose Manuel Vilchez, Jimmy A. Irwin, Eric D. Miller, Lucas E. Johnson   +9 more
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BST1047+1156: A (Failing) Ultradiffuse Tidal Dwarf in the Leo I Group

The Astrophysical Journal
We use deep Hubble Space Telescope imaging to study the resolved stellar populations in BST1047+1156, a gas-rich, ultradiffuse dwarf galaxy found in the intragroup environment of the Leo I galaxy group.
J. Christopher Mihos, Patrick R. Durrell, Aaron E. Watkins, Stacy S. McGaugh, John Feldmeier   +4 more
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Zooming by in the CARPoolGP Lane: New CAMELS-TNG Simulations of Zoomed-in Massive Halos

The Astrophysical Journal
Galaxy formation models within cosmological hydrodynamical simulations contain numerous parameters with nontrivial influences over the resulting properties of simulated cosmic structures and galaxy populations. It is computationally challenging to sample
Max E. Lee, Shy Genel, Benjamin D. Wandelt, Benjamin Zhang, Ana Maria Delgado, Shivam Pandey, Erwin T. Lau, Christopher Carr, Harrison Cook, Daisuke Nagai, Daniel Angles-Alcazar, Francisco Villaescusa-Navarro, Greg L. Bryan   +12 more
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Environment and Gas Fraction in Type 2 AGN versus Non-AGN Galaxies

The Astrophysical Journal
We investigate the environmental parameters and gas fraction ( f _gas ) properties of type 2 active galactic nuclei (AGN) and non-AGN galaxies, utilizing a large sample of galaxies from the Sloan Digital Sky Survey DR7 with z ≤ 0.3.
Jyoti Yadav, Jong-Hak Woo, Ashraf Ayubinia   +2 more
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Multiphase Gas Offsets in the Atmospheres of Central Galaxies and Their Consequences for SMBH Activation. I. The Hot and Warm Ionized Gas Phases

The Astrophysical Journal
We investigate the spatial relationships between multiphase gas components and supermassive black hole (SMBH) activity in a sample of 25 cool-core galaxy groups and clusters.
Francesco Ubertosi, Fabrizio Brighenti, Ewan O’Sullivan, Gerrit Schellenberger, Myriam Gitti, Simona Giacintucci, Pasquale Temi, Laurence P. David, Jan Vrtilek, Tiziana Venturi, Elisabetta Liuzzo, Marcella Massardi, Kamlesh Rajpurohit   +12 more
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Mapping the Star Formation and H i Gas Properties of Galaxies along Large-scale Structures around the Virgo Cluster

The Astrophysical Journal
We investigate the star formation and neutral atomic hydrogen (H i ) gas properties of galaxies along three large-scale filaments and two galaxy groups in the wide field around the Virgo cluster.
Hyein Yoon, O. Ivy Wong, Aeree Chung, Shan Huang   +3 more
doaj   +1 more source