Results 141 to 150 of about 182,258 (232)

The JWST EXCELS Survey: Insights into the Nature of Quenching at Cosmic Noon

The Astrophysical Journal
We study 24 massive quiescent galaxies with $\mathrm{log}{{M}}_{* }/{{M}}_{\odot }\gt 10$ at 1 
Maya Skarbinski, Kate Rowlands, Katherine Alatalo, Vivienne Wild, Adam C. Carnall, Omar Almaini, David Maltby, Thomas de Lisle, Timothy Heckman, Ryan Begley, Fergus Cullen, James S. Dunlop, Guillaume Hewitt, Ho-Hin Leung, Derek McLeod, Ross McLure, Justin Atsushi Otter, Pallavi Patil, Andreea Petric, Alice E. Shapley, Struan Stevenson, Elizabeth Taylor   +21 more
doaj   +1 more source

Three Quenched, Faint Dwarf Galaxies in the Direction of NGC 300: New Probes of Reionization and Internal Feedback

The Astrophysical Journal Letters
We report the discovery of three faint and ultrafaint dwarf galaxies—Sculptor A, Sculptor B, and Sculptor C—in the direction of NGC 300 ( D = 2.0 Mpc), a Large Magellanic Cloud–mass galaxy.
David J. Sand, Burçin Mutlu-Pakdil, Michael G. Jones, Ananthan Karunakaran, Jennifer E. Andrews, Paul Bennet, Denija Crnojević, Giuseppe Donatiello, Alex Drlica-Wagner, Catherine Fielder, David Martínez-Delgado, Clara E. Martínez-Vázquez, Kristine Spekkens, Amandine Doliva-Dolinsky, Laura C. Hunter, Jeffrey L. Carlin, William Cerny, Tehreem N. Hai, Kristen B.W. McQuinn, Andrew B. Pace, Adam Smercina   +20 more
doaj   +1 more source

RUBIES Spectroscopically Confirms the High Number Density of Quiescent Galaxies from 2 < z< 5

The Astrophysical Journal
We present the number density of massive ( ${\mathrm{log}}({M}_{* }/{M}_{\odot })\gt 10.3$ ) quiescent galaxies at 2 
Yunchong Zhang, Anna de Graaff, David J. Setton, Sedona H. Price, Rachel Bezanson, Claudia del P. Lagos, Sam E. Cutler, Ian McConachie, Nikko J. Cleri, Olivia R. Cooper, Rashmi Gottumukkala, Jenny E. Greene, Michaela Hirschmann, Gourav Khullar, Ivo Labbe, Joel Leja, Michael V. Maseda, Jorryt Matthee, Tim B. Miller, Themiya Nanayakkara, Katherine A. Suess, Bingjie Wang, Katherine E. Whitaker, Christina C. Williams   +23 more
doaj   +1 more source

The properties of discrete X-ray sources in star-forming galaxies [PDF]

, 2012
Observations of starburst galaxies have revealed a large number of point-like X-ray sources located within these systems, including active galactic nuclei (AGN), X-ray binaries (XRBs), and utraluminous X-ray sources (ULXs).
JACKSON, FLOYD,EMMANUEL
core  

Winding Back the Clock: Recent Star Formation Histories of Massive Quiescent Galaxies Are Consistent with Their Rapid Number Density Evolution since z ∼ 7

The Astrophysical Journal Letters
Massive quiescent galaxies have been identified out to z  ∼ 7 in early JWST data, substantially exceeding (≳1 dex at z  > 4) the number densities from most theoretical predictions. We investigate whether the number densities implied by the star formation
Yunchong Zhang, Zhiyuan Ji, Rachel Bezanson, Christina C. Williams, Gabriel Brammer, Aidan P. Cloonan, Anna de Graaff, Jenny E. Greene, Michaela Hirschmann, Christian Kragh Jespersen, Gourav Khullar, Claudia del P. Lagos, Joel Leja, Michael V. Maseda, Ian McConachie, Pascal A. Oesch, Sedona H. Price, David J. Setton, Katherine A. Suess, Katherine E. Whitaker   +19 more
doaj   +1 more source

The Ancient Star Formation History of the Extremely Low-mass Galaxy Leo P: An Emerging Trend of a Post-reionization Pause in Star Formation

The Astrophysical Journal
Isolated, low-mass galaxies provide the opportunity to assess the impact of reionization on their star formation histories (SFHs) without the ambiguity of environmental processes associated with massive host galaxies.
Kristen B. W. McQuinn, Max J. B. Newman, Evan D. Skillman, O. Grace Telford, Alyson Brooks, Elizabeth A. K. Adams, Danielle A. Berg, Martha L. Boyer, John M. Cannon, Andrew E. Dolphin, Anthony J. Pahl, Katherine L. Rhode, John J. Salzer, Roger E. Cohen, Steve R. Goldman   +14 more
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The Environmental Quenching Mechanisms of Field Dwarf Galaxies

The Astrophysical Journal
Field dwarf galaxies not actively forming stars are relatively rare in the local Universe, but are present in cosmological hydrodynamical simulations.
José A. Benavides, Julio F. Navarro, Laura V. Sales, Isabel Pérez, Bahar Bidaran   +4 more
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Groups, clusters and superclusters of galaxies [PDF]

, 1991
Galaxies are observed in a diverse range of associations. Understanding the dynamical, statistical and clustering properties of aggregations of galaxies forms the main body of this thesis.
Moore, B, Moore, Ben
core  

An Unexpected Population of Quenched Galaxies Harboring Undermassive SMBHs Revealed by Tidal Disruption Events

The Astrophysical Journal Letters
Restricted by event horizon suppression, tidal disruption events (TDEs) provide a unique window into otherwise hidden supermassive black holes (SMBHs) at the lower end of the mass spectrum, allowing the connection between star formation and SMBH mass to ...
Paige Ramsden, Sean L. McGee, Matt Nicholl   +2 more
doaj   +1 more source

The impact of cosmic filaments on starburst galaxies across cosmic times

Astronomy & Astrophysics
Cosmological simulations suggest that various galaxy properties depend on their location within the cosmic web. Yet direct observational evidence of the dependence of star formation activity on distance to filaments remains scarce and is missing at z ≳ 1.
Jego Baptiste, Béthermin Matthieu, Kraljic Katarina, Laigle Clotilde, Wang Lingyu, La Marca Antonio, Ilbert Olivier, Akins Hollis B., Casey Caitlin M., Leroy Gavin, Hadi Ali, Kartaltepe Jeyhan S., Koekemoer Anton M., McCracken Henry Joy, Paquereau Louise, Rhodes Jason, Robertson Brant E., Shuntov Marko, Toni Greta, Xu Can   +19 more
doaj   +1 more source