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Recent work has suggested that the amplitude of the size mass relation of massive early type galaxies evolves with redshift. Here we use a semi-analytical galaxy formation model to study the size evolution of massive early type galaxies. We…

Astrophysics of Galaxies · Physics 2014-12-22 Lizhi Xie , Qi Guo , Andrew P. Cooper , Carlos S. Frenk , Ran Li , Liang Gao

The cosmic star formation rate density first increases with time towards a pronounced peak 10 Gyrs ago (or z=1-2) and then slows down, dropping by more than a factor 10 since z=1. The processes at the origin of the star formation quenching…

Astrophysics of Galaxies · Physics 2017-01-11 F. Combes , the PHIBSS collaboration

We compare the growth in stellar mass of galaxies in the $6<z<12$ epoch with predictions of a semi-analytic galaxy formation model - Galacticus. In contrast to diverse and controversial results that compare models and data for the…

Astrophysics of Galaxies · Physics 2026-02-03 Alan Dressler , Andrew Benson

Recent JWST observations suggest an excess of $z\gtrsim10$ galaxy candidates above most theoretical models. Here, we explore how the interplay between halo formation timescales, star formation efficiency and dust attenuation affects the…

Astrophysics of Galaxies · Physics 2023-01-12 Charlotte A. Mason , Michele Trenti , Tommaso Treu

We study the structural evolution of massive galaxies by linking progenitors and descendants at a constant cumulative number density of n_c=1.4x10^{-4} Mpc^{-3} to z~3. Structural parameters were measured by fitting Sersic profiles to high…

Galaxy evolution during the last 9 Gyr is discussed. It can be traced back from well known present-day galaxies or directly observed for galaxies at different look back times. This requires clear and consistently matched selection criteria…

Astrophysics · Physics 2007-05-23 F. Hammer

We present results of our 1.4 GHz image stacking analysis of mass-selected galaxies in the COSMOS field. From the resulting median radio continuum flux density we have determined the evolution of the average star formation rate (SFR) of…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-09 Alexander Karim , Eva Schinnerer , the VLA-COSMOS , COSMOS collaborations

How does the number density of early-type galaxies (E+S0) evolve with redshift? What are their star formation histories? Do their mass density profile and other structural properties evolve with redshift? Answering these questions is key to…

Astrophysics · Physics 2007-05-23 T. Treu

We show that the ratio of galaxies' specific star formation rates (SSFRs) to their host halos' specific mass accretion rates (SMARs) strongly constrains how the galaxies' stellar masses, specific star formation rates, and host halo masses…

Astrophysics of Galaxies · Physics 2015-01-21 Peter S. Behroozi , Joseph Silk

In order to assess whether the environment has a significant effect on galaxy sizes, we compare the mass--size relations of cluster and field galaxies in the $0.4 < z < 0.8$ redshift range from the ESO Distant Cluster Survey (EDisCS) using…

We use the IllustrisTNG cosmological hydrodynamical simulation to study the evolution of star formation rate (SFR)-density relation over cosmic time. We construct several samples of galaxies at different redshifts from $z=2.0$ to $z=0.0$,…

Astrophysics of Galaxies · Physics 2019-08-14 Ho Seong Hwang , Jihye Shin , Hyunmi Song

We investigate size variation with rest-frame wavelength for star-forming galaxies based on the second JWST Advanced Deep Extragalactic Survey data release. Star-forming galaxies are typically smaller at longer wavelength from UV-to-NIR at…

Astrophysics of Galaxies · Physics 2024-11-13 Cheng Jia , Enci Wang , Huiyuan Wang , Hui Li , Yao Yao , Jie Song , Hongxin Zhang , Yu Rong , Yangyao Chen , Haoran Yu , Zeyu Chen , Haixin Li , Chengyu Ma , Xu Kong

Massive quiescent galaxies at high redshift show significantly more compact morphology than their local counterparts. To examine their internal structure across a wide redshift range and investigate potential redshift dependence, we…

The evolution of the number density of galaxies in the universe, and thus also the total number of galaxies, is a fundamental question with implications for a host of astrophysical problems including galaxy evolution and cosmology. However…

Astrophysics of Galaxies · Physics 2016-10-19 Christopher J. Conselice , Aaron Wilkinson , Kenneth Duncan , Alice Mortlock

We have explored prevailing modes of galaxy growth for redshifts z ~ 6-14, comparing substantially overdense and normal regions of the universe, using high-resolution zoom-in cosmological simulations. Such rare overdense regions have been…

Astrophysics of Galaxies · Physics 2015-06-22 Emilio Romano-Diaz , Isaac Shlosman , Jun-Hwan Choi , Raphael Sadoun

We present the first direct and unbiased measurement of the evolution of the dust mass function of galaxies over the past 5 billion years of cosmic history using data from the Science Demonstration Phase of the Herschel-ATLAS. The sample…

We analyze the recent released HST/WFC3 IR images in the GOODS-N region to study the formation and evolution of Quiescent galaxies (QGs). After examining the reliability with artificial galaxies, we obtain the morphological parameters with…

Astrophysics of Galaxies · Physics 2015-06-18 Takahiro Morishita , Takashi Ichikawa , Masaru Kajisawa

We use the First Light And Reionisation Epoch Simulations (FLARES) to study the evolution of the rest-frame ultraviolet (UV) and far-infrared (FIR) sizes for a statistical sample of massive ($\gtrsim10^{9}$M$_{\odot}$) high redshift…

We present the galaxy stellar mass - size relation in the rest-frame near-IR ($1.5~\mu{\text{m}}$) and its evolution with redshift up to $z=2.5$. S\'ersic profiles are measured for $\sim$ $26\,000$ galaxies with stellar masses $M_\star >…

Astrophysics of Galaxies · Physics 2024-09-04 Marco Martorano , Arjen van der Wel , Maarten Baes , Eric F. Bell , Gabriel Brammer , Marijn Franx , Angelos Nersesian

We measure galaxy sizes on a sample of $\sim1200$ galaxies with confirmed spectroscopic redshifts $2 \leq z_{spec} \leq 4.5$ in the VIMOS Ultra Deep Survey (VUDS), representative of star-forming galaxies with $i_\mathrm{AB} \leq 25$. We…

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