Results 71 to 75 of about 258,145 (75)

The First Quenched Galaxies: When and How?

The Astrophysical Journal Letters
Many quiescent galaxies discovered in the early Universe by JWST raise fundamental questions on when and how these galaxies became and stayed quenched. Making use of the latest version of the semianalytic model GAEA that provides good agreement with the ...
Lizhi Xie, Gabriella De Lucia, Fabio Fontanot, Michaela Hirschmann, Yannick M. Bahé, Michael L. Balogh, Adam Muzzin, Benedetta Vulcani, Devontae C. Baxter, Ben Forrest, Gillian Wilson, Gregory H. Rudnick, M. C. Cooper, Umberto Rescigno   +13 more
doaj   +1 more source

On the Origin of the Variety of Velocity Dispersion Profiles of Galaxies

The Astrophysical Journal
Observed and simulated galaxies exhibit a significant variation in their velocity dispersion profiles. We examine the inner and outer slopes of stellar velocity dispersion profiles using integral field spectroscopy data from two surveys, SAMI (for z < 0 ...
San Han, Sukyoung K. Yi, Sree Oh, Mina Pak, Scott Croom, Julien Devriendt, Yohan Dubois, Taysun Kimm, Katarina Kraljic, Christophe Pichon, Marta Volonteri   +10 more
doaj   +1 more source

A Tale of Three Dwarfs: Cluster-based Star Formation Histories of Blue Compact Dwarf Galaxies

The Astrophysical Journal
We present a new study of the cluster populations in the blue compact dwarf galaxies (BCD) ESO185-IG13, ESO338-IG04, and Haro11, based on new and archival high-resolution images taken by the Hubble Space Telescope, and the first to probe the populations ...
Rupali Chandar, Miranda Caputo, Angus Mok, Sean Linden, Bradley C. Whitmore, Paul Goudfrooij, David O. Cook, Daniela Calzetti, Debra M. Elmegreen, Janice C. Lee, Leonardo Úbeda, Richard White   +11 more
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Different Influence of Gas Accretion on the Evolution of Star-forming and Non-star-forming Galaxies

The Astrophysical Journal
Using integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory survey, we investigate the spatially resolved properties and empirical relations of a star-forming galaxy and a non-star-forming galaxy hosting ...
Min Bao, Wenlong Zhao, Qirong Yuan
doaj   +1 more source

The Formation Histories of Massive and Quiescent Galaxies in the 3 < z < 4.5 Universe

The Astrophysical Journal
We present the formation histories of 19 massive (≳3 × 10 ^10 M _⊙ ) quiescent (specific star formation rate, sSFR  3, resulting in a spectroscopically confirmed number density of ~1.4 × 10 ^−5 Mpc ^−3 between z  ~ 3 and 4. Rest-frame U  −  V versus V  − 
Themiya Nanayakkara, Karl Glazebrook, Corentin Schreiber, Harry Chittenden, Gabriel Brammer, James Esdaile, Colin Jacobs, Glenn G. Kacprzak, Lalitwadee Kawinwanichakij, Lucas C. Kimmig, Ivo Labbe, Claudia Lagos, Danilo Marchesini, M. Martìnez-Marìn, Z. Cemile Marsan, Pascal A. Oesch, Casey Papovich, Rhea-Silvia Remus, Kim-Vy H. Tran   +18 more
doaj   +1 more source