Results 41 to 50 of about 208,581 (197)

Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history

, 1998
We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution in a self ...
Bekki, Kenji, Shioya, Yasuhiro
core   +1 more source

JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST

The Astrophysical Journal Letters, 2023
With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies.
Erica J. Nelson, Katherine A. Suess, Rachel Bezanson, Sedona H. Price, Pieter van Dokkum, Joel Leja, Bingjie Wang, Katherine E. Whitaker, Ivo Labbé, Laia Barrufet, Gabriel Brammer, Daniel J. Eisenstein, Justus Gibson, Abigail I. Hartley, Benjamin D. Johnson, Kasper E. Heintz, Elijah Mathews, Tim B. Miller, Pascal A. Oesch, Lester Sandles, David J. Setton, Joshua S. Speagle, Sandro Tacchella, Ken-ichi Tadaki, Hannah Übler, John. R. Weaver   +25 more
doaj   +1 more source

A new measurement of the evolving near-infrared galaxy luminosity function out to z~4: a continuing challenge to theoretical models of galaxy formation

, 2008
We present the most accurate measurement to date of cosmological evolution of the near-infrared galaxy luminosity function, from the local Universe out to z~4.
Bershady, Bertin, Bolzonella, Bolzonella, Bower, Bruzual, C. Simpson, Calzetti, Caputi, Cen, Chen, Cimatti, Ciotti, Cirasuolo, Cirasuolo, Cole, Cole, Coleman, Cowie, Cowie, Croton, Daddi, Daddi, De Lucia, Di Matteo, Dickinson, Drory, Drory, Dunlop, Fabian, Fazio, Feulner, Fontana, Fontana, Fontanot, Franx, Furusawa, Gardner, Giavalisco, Glazebrook, Granato, Granato, Grazian, J. S. Dunlop, Kauffmann, Kauffmann, Kauffmann, Kinney, Kitzbichler, Kochanek, Lawrence, Lilly, Lonsdale, Lonsdale, M. Cirasuolo, Madau, Maraston, Marchesini, Marchesini, Marshall, McLeod, Menci, Menci, Mignoli, Mobasher, Monaco, Moustakas, Nagamine, Nagamine, Nagamine, O. Almaini, Oke, Perlmutter, Poggianti, Pozzetti, Pozzetti, Pérez-González, R. J. McLure, Reddy, Riess, Rix, S. Foucaud, Saracco, Saracco, Schechter, Schmidt, Scoville, Sekiguchi, Silk, Simpson, Somerville, Spergel, Spergel, Springel, Springel, Tegmark, Väisänen, Warren, White, Yamada   +99 more
core   +1 more source

Using Cumulative Number Densities to Compare Galaxies across Cosmic Time [PDF]

, 2013
Comparing galaxies across redshifts at fixed cumulative number density is a popular way to estimate the evolution of specific galaxy populations. This method ignores scatter in mass accretion histories and galaxy-galaxy mergers, which can lead to errors ...
Behroozi, Peter, Marchesini, Danilo, Muzzin, Adam, Papovich, Casey, Stefanon, Mauro, Wechsler, Risa   +5 more
core   +5 more sources

Cosmological evolution of galaxies [PDF]

, 2013
I review the subject of the cosmological evolution of galaxies, including different aspects of growth in disk galaxies, by focussing on the angular momentum problem, mergers, and their by-products. I discuss the alternative to merger-driven growth -- cold accretion and related issues.
openaire   +2 more sources

CLEAR: The Morphological Evolution of Galaxies in the Green Valley

The Astrophysical Journal, 2023
Quiescent galaxies having more compact morphologies than star-forming galaxies has been a consistent result in the field of galaxy evolution. What is not clear is at what point this divergence happens, i.e., when do quiescent galaxies become compact, and
Vicente Estrada-Carpenter, Casey Papovich, Ivelina Momcheva, Gabriel Brammer, Raymond C. Simons, Nikko J. Cleri, Mauro Giavalisco, Jasleen Matharu, Jonathan R. Trump, Benjamin Weiner, Zhiyuan Ji   +10 more
doaj   +1 more source

Modelling ISO Galaxy Counts with Luminosity and Merger Rate Evolution [PDF]

, 1998
We model galaxy evolution in the 6.75 and 15 micron passbands of the ISO satellite, by combining models of galaxy evolution at optical wavelengths (which are consistent with the optical galaxy counts) with observed spectral energy distributions in the ...
Eales, Steve, Roche, Nathan
core   +2 more sources

Secular evolution in barred galaxies [PDF]

, 2007
A strong bar rotating within a massive halo should lose angular momentum to the halo through dynamical friction, as predicted by Weinberg. We have conducted fully self-consistent, numerical simulations of barred galaxy models with a live halo population and find that bars are indeed braked very rapidly.
Sellwood, J. A., Debattista, Victor P.
openaire   +2 more sources

Moving Groups in the Solar Neighborhood with Gaia, APOGEE, GALAH, and LAMOST: Dynamical Effects Gather Gas and the Ensuing Star Formation Plays an Important Role in Shaping the Stellar Velocity Distributions

The Astronomical Journal
With Gaia, APOGEE, GALAH, and LAMOST data, we investigate the positional, kinematic, chemical, and age properties of nine moving groups in the solar neighborhood.
Xilong Liang, Suk-Jin Yoon, Jingkun Zhao
doaj   +1 more source

Rapid Quenching of Galaxies at Cosmic Noon

The Astrophysical Journal, 2023
The existence of massive quiescent galaxies at high redshift seems to require rapid quenching, but it is unclear whether all quiescent galaxies have gone through this phase and what physical mechanisms are involved.
Minjung Park, Sirio Belli, Charlie Conroy, Sandro Tacchella, Joel Leja, Sam E. Cutler, Benjamin D. Johnson, Erica J. Nelson, Razieh Emami   +8 more
doaj   +1 more source