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We analyze 40 cosmological re-simulations of individual massive galaxies with present-day stellar masses of $M_{*} > 6.3 \times 10^{10} M_{\odot}$ in order to investigate the physical origin of the observed strong increase in galaxy sizes…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Ludwig Oser , Thorsten Naab , Jeremiah P. Ostriker , Peter H. Johansson

In their evolution, star-forming galaxies are known to follow scaling relations between some fundamental physical quantities, such as the mass-metallicity and the main sequence relations. We aim at studying the evolution of galaxies that,…

Astrophysics of Galaxies · Physics 2020-10-14 E. Spitoni , F. Calura , M. Mignoli , R. Gilli , V. Silva Aguirre , A. Gallazzi

We present cosmological hydrodynamic simulations performed to study evolution of galaxy population. The simulations follow timed release of mass, energy, and metals by stellar evolution and employ phenomenological treatments of supernova…

Astrophysics of Galaxies · Physics 2014-09-15 Takashi Okamoto , Ikkoh Shimizu , Naoki Yoshida

We explore the relations between size, stellar mass and average stellar population age (indicated by D$_n4000$ indices) for a sample of $\sim11000$ intermediate-redshift galaxies from the SHELS spectroscopic survey (Geller et al. 2014)…

Astrophysics of Galaxies · Physics 2019-02-20 Ivana Damjanov , H. Jabran Zahid , Margaret J. Geller , Yousuke Utsumi , Jubee Sohn , Harrison Souchereau

In this paper, we use stacking analysis to trace the mass-growth, colour evolution, and structural evolution of present-day massive galaxies ($\log(M_{*}/M_{\odot})=11.5$) out to $z=5$. We utilize the exceptional depth and area of the…

Here we explore the evolution of galaxy ensembles at early times by writing the in situ stellar mass growth of galaxies purely as a stationary stochastic (e.g., quasi-steady state) process. By combining the mathematics of such processes…

Astrophysics of Galaxies · Physics 2016-10-24 Daniel D. Kelson , Andrew J. Benson , Louis E. Abramson

The increasing number of distant galaxies observed with ALMA by the ALPINE and REBELS surveys and the early release observations of the JWST promise to revolutionize our understanding of cosmic star formation and the assembly of normal,…

Astrophysics of Galaxies · Physics 2022-12-19 C. Di Cesare , L. Graziani , R. Schneider , M. Ginolfi , A. Venditti , P. Santini , L. K. Hunt

We use new models of stellar population synthesis to estimate the fraction of stars formed during the last major bursts of star formation in E/S0 galaxies in low-redshift clusters ($z\simlt0.4$) from the spectral signatures of…

Astrophysics · Physics 2009-10-22 S. Charlot , J. Silk

Connecting high-redshift galaxies to their low-redshift descendants is one of the most important and challenging tasks of galaxy evolution studies. In this work, we investigate whether incorporating high-redshift environmental factors…

Some massive, quiescent galaxies at z>3 appear to contain considerable numbers of old stars (forming at z>7). Works inferring the star formation histories of at least one such galaxy observed with JWST have suggested that the assembly of so…

Astrophysics of Galaxies · Physics 2025-09-04 R. K. Cochrane

We use simple analytic reasoning to identify physical processes that drive the evolution of the cosmic star formation density in cold dark matter universes. Based on our analysis, we formulate a model to characterise the redshift dependence…

Astrophysics · Physics 2009-07-09 Lars Hernquist , Volker Springel

(Abridged) In these lectures aimed for non-specialists, I review progress in understanding how galaxies form and evolve. Both the star formation history and assembly of stellar mass can be empirically traced from redshifts z~6 to the…

Astrophysics · Physics 2015-06-24 Richard S Ellis

We present the deepest clustering analysis of early galaxies to date, analyzing $N_{\rm{g}} \simeq 6500$ photometrically-selected Lyman Break Galaxies from JWST's Advanced Deep Extragalactic Survey (JADES) to reveal how galaxies and dark…

Astrophysics of Galaxies · Physics 2026-01-06 Nicolò Dalmasso , Giovanni Ferrami , Nicha Leethochawalit , Emanuele M. Ventura , Michele Trenti

The evolution of the galaxy stellar mass function is especially useful to test the current model of galaxy formation. Observational data have revealed a few inconsistencies with predictions from the $\Lambda {\rm CDM}$ model. For example,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Xi Kang , WeiPeng Lin , Ramin A. Skibba , Dongni Chen

Based on VLT/FORS spectroscopy and HST/ACS imaging, we have constructed a sample of ~200 field spiral galaxies that cover redshifts up to z~1. Such a large data set allows to study the evolution of fundamental galaxy parameters like…

Astrophysics · Physics 2007-05-23 Asmus Boehm , Bodo L. Ziegler

We present the results of a size and structural analysis of 1395 galaxies at $0.5 \leq z \lesssim 8$ with stellar masses $\log \left(M_* / M_{\odot}\right)$ $>$ 9.5 within the JWST Public CEERS field that overlaps with the HST CANDELS EGS…

Astrophysics of Galaxies · Physics 2025-07-28 K. Ormerod , C. J. Conselice , N. J. Adams , T. Harvey , D. Austin , J. Trussler , L. Ferreira , J. Caruana , G. Lucatelli , Q. Li , W. J. Roper

Early JWST observations have revealed substantial numbers of galaxies out to redshifts as high as $z \simeq 14$, reflecting a slow evolution of the galaxy UV luminosity function (LF) not anticipated by many models of galaxy evolution. The…

Astrophysics of Galaxies · Physics 2025-04-16 C. T. Donnan , J. S. Dunlop , R. J. McLure , D. J. McLeod , F. Cullen

Galaxies are predicted to assemble their stellar haloes through the accretion of stellar material from interactions with their cosmic environment. Observations that trace stellar halo buildup probe the processes that drive galaxy size and…

To understand the formation and evolution of galaxies at redshifts z < 10, one must invariably introduce specific models (e.g., for the star formation) in order to fully interpret the data. Unfortunately, this tends to render the analysis…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-19 Manoj K. Yennapureddy , Fulvio Melia

We present the analysis of a sample of \ha\,, \hb\ and \oii\ emission line galaxies from the \otelo\ survey, with masses typically below $log(M_*/M_\sun) \sim 9.4$ and redshifts between $z \sim 0.4$ and 1.43. We study the star formation…

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