Results 51 to 60 of about 15,815 (162)

The Evolution of Half-mass Radii and Color Gradients for Young and Old Quiescent Galaxies at 0.5 < z < 3 with JWST/PRIMER

The Astrophysical Journal
We present a study of the size growth of the red sequence between 0.5 
Maike Clausen, Ivelina G. Momcheva, Katherine E. Whitaker, Sam E. Cutler, Rachel S. Bezanson, James S. Dunlop, Norman A. Grogin, Anton M. Koekemoer, Derek J. McLeod, Ross J. McLure, Tim B. Miller, Erica J. Nelson, Arjen van der Wel, David A. Wake, Stijn Wuyts   +14 more
doaj   +1 more source

How Do Uncertainties in Galaxy Formation Physics Impact Field-level Galaxy Bias?

The Astrophysical Journal
Our ability to extract cosmological information from galaxy surveys is limited by uncertainties in the galaxy–dark matter halo relationship for a given galaxy population, which are governed by the intricacies of galaxy formation.
Mahlet Shiferaw, Nickolas Kokron, Risa H. Wechsler   +2 more
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Back to the Green Valley: How to Rejuvenate an S0 Galaxy through Minor Mergers

Galaxies, 2015
About half of the S0 galaxies in the nearby Universe show signatures of recent or ongoing star formation. Whether these S0 galaxies were rejuvenated by the accretion of fresh gas is still controversial.
Michela Mapelli
doaj   +1 more source

The transformation of Spirals into S0 galaxies in the cluster environment

Frontiers in Astronomy and Space Sciences, 2015
We discuss the observational evidences of the morphological transformation of Spirals into S0 galaxies in the cluster environment exploiting two big databases of galaxy clusters: WINGS (0 ...
Mauro eD'onofrio, Paola eMarziani, Lucio eBuson   +2 more
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Galaxy Formation

, 2007
15 pages, 3 figures, invited review talk, to appear in the ASP conference proceedings of the "Frank N. Bash Symposium 2007: New Horizons in Astronomy", editors: A. Frebel, J. Maund, J.
openaire   +2 more sources

Galaxy Formation

, 2005
I summarize current knowledge of galaxy formation with emphasis on the initial conditions provided by the Lambda CDM cosmology, integral constraints from cosmological quantities, and the demographics of high-redshift protogalaxies. Tables are provided summarizing the number density, star formation rate and stellar mass per object, cosmic star formation
openaire   +2 more sources

A Closer Look at the Extended Edge-on Low-surface Brightness Galaxies

The Astrophysical Journal
To understand the origin of extended disks of low-surface brightness (LSB) galaxies, we studied in detail four such systems with large disks seen edge on. Two of them are edge-on giant LSB galaxies (gLSBGs) recently identified by our team.
Anna S. Saburova, Damir Gasymov, Evgenii V. Rubtsov, Igor V. Chilingarian, Sviatoslav Borisov, Ivan Gerasimov, Fedor Kolganov, Anastasia V. Kasparova, Roman I. Uklein, Michal Bílek, Kirill A. Grishin, Anatoly Zasov, Mariia Demianenko, Ivan Yu. Katkov, Ana Lalović, Srdjan Samurović   +15 more
doaj   +1 more source

The Heavy Metal Survey: The Evolution of Stellar Metallicities, Abundance Ratios, and Ages of Massive Quiescent Galaxies since z ∼ 2

The Astrophysical Journal
We present the elemental abundances and ages of 19 massive quiescent galaxies at z ∼ 1.4 and z ∼ 2.1 from the Keck Heavy Metal Survey. The ultradeep LRIS and MOSFIRE spectra were modeled using a full-spectrum stellar population fitting code with variable
Aliza G. Beverage, Mariska Kriek, Katherine A. Suess, Charlie Conroy, Sedona H. Price, Guillermo Barro, Rachel Bezanson, Marijn Franx, Brian Lorenz, Yilun Ma, Lamiya A. Mowla, Imad Pasha, Pieter van Dokkum, Daniel R. Weisz   +13 more
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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

UNCOVER: The Rest-ultraviolet to Near-infrared Multiwavelength Structures and Dust Distributions of Submillimeter-detected Galaxies in A2744

The Astrophysical Journal
With the wavelength coverage, sensitivity, and high spatial resolution of JWST, it is now possible to peer through the dust attenuation to probe the rest-frame near-infrared (NIR) and stellar structures of extremely dusty galaxies at cosmic noon ( z  ∼ 1−
Sedona H. Price, Katherine A. Suess, Christina C. Williams, Rachel Bezanson, Gourav Khullar, Erica J. Nelson, Bingjie Wang, John R. Weaver, Seiji Fujimoto, Vasily Kokorev, Jenny E. Greene, Gabriel Brammer, Sam E. Cutler, Pratika Dayal, Lukas J. Furtak, Ivo Labbe, Joel Leja, Tim B. Miller, Themiya Nanayakkara, Richard Pan, Katherine E. Whitaker   +20 more
doaj   +1 more source