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We present a model for the broad morphological distinction between the disk and spheroidal components of galaxies. Elaborating on the hierarchical clustering scheme of galaxy formation proposed by Cole et al., we assume that galaxies form…

Astrophysics · Physics 2015-06-24 C. M. Baugh , S. Cole , C. S. Frenk

We study the evolution of the stellar mass density for the separate families of bulge-dominated and disk-dominated galaxies over the redshift range 0.25 < z < 1.15. We derive quantitative morphology for a statistically significant galaxy…

Astrophysics · Physics 2009-11-11 M. Pannella , U. Hopp , R. P. Saglia , R. Bender , N. Drory , M. Salvato , A. Gabasch , G. Feulner

Observed and simulated galaxies exhibit correlations between stellar mass, metallicity and morphology. We use the EAGLE cosmological simulation to examine the origin of these correlations for galaxies in the stellar mass range…

Astrophysics of Galaxies · Physics 2022-04-13 L. J. Zenocratti , M. E. De Rossi , T. Theuns , M. A. Lara-López

We investigate the origin of the Hubble sequence by analysing the evolution of the kinematic morphologies of central galaxies in the EAGLE cosmological simulation. By separating each galaxy into disk and spheroidal stellar components and…

Astrophysics of Galaxies · Physics 2018-05-10 Bart Clauwens , Joop Schaye , Marijn Franx , Richard G. Bower

We present combined evolution of morphological and stellar properties of galaxies on the two sides of z=2 (2.0<z<4.0 and 1.5<z<2.0) in CDFS, with ground-based spectroscopic redshifts. We perform bulge-disc decomposition on their images in J…

Astrophysics of Galaxies · Physics 2019-06-17 Sonali Sachdeva , Rupjyoti Gogoi , Kanak Saha , Ajit Kembhavi , Somak Raychaudhury

We use ~8,600 >5e10 Msol COSMOS galaxies to study how the morphological mix of massive ellipticals, bulge-dominated disks, intermediate-bulge disks, bulge-less disks and irregular galaxies evolves from z=0.2 to z=1. The morphological…

We address the formation of massive stellar spheroids between redshifts $z=4$ and 1 using a suite of AMR hydro-cosmological simulations. The spheroids form as bulges, and the spheroid mass growth is partly driven by violent disc instability…

Astrophysics of Galaxies · Physics 2015-06-22 Daniel Ceverino , Avishai Dekel , Dylan Tweed , Joel Primack

We investigate the evolution of galaxy masses and star formation rates in the Evolution and Assembly of Galaxies and their Environment (EAGLE) simulations. These comprise a suite of hydrodynamical simulations in a $\Lambda$CDM cosmogony…

This thesis makes use of the imaging data from the Advanced Camera for Surveys (ACS) of the Hubble Space Telescope (HST) in the Cosmic Evolution Survey (COSMOS) and the Deep Extragalactic VIsible Legacy Survey (DEVILS) field. We provide…

Astrophysics of Galaxies · Physics 2022-03-18 Abdolhosein Hashemizadeh

We use the GALFORM semi-analytical model of galaxy formation and the Planck-Millennium simulation to investigate the origins of stellar mass in galaxies and their spheroids. We compare the importance of mergers and disc instabilities, as…

Astrophysics of Galaxies · Physics 2022-11-16 Filip Huško , Cedric G. Lacey , Carlton M. Baugh

We report first results from a series of N-body/gasdynamical simulations designed to study the origin of galaxy morphologies in a cold dark matter-dominated universe. The simulations include star formation and feedback and have numerical…

Astrophysics · Physics 2011-05-05 M. Steinmetz , Julio F. Navarro

In the simplest scenario, disk galaxies form predominantly in halos with high angular momentum and quiet recent assembly history, whereas spheroids are the slowly-rotating remnants of repeated merging events. We explore these assumptions…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-13 Laura V. Sales , Julio F. Navarro , Tom Theuns , Joop Schaye , Simon D. M. White , Carlos S. Frenk , Robert A. Crain , Claudio Dalla Vecchia

We explore the evolution of the stellar mass-size relation of galaxies of different morphological types and specifically bulge and disk components. We use a sample of $\sim35,000$ galaxies within a redshift range $0 < z < 1$, and stellar…

Astrophysics of Galaxies · Physics 2022-05-09 Abdolhosein Hashemizadeh

We study the stellar discs and spheroids in eight simulations of galaxy formation within Milky Way-mass haloes in a Lambda Cold Dark Matter cosmology. A first paper in this series concentrated on disc properties. Here, we extend this…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Cecilia Scannapieco , Simon D. M White , Volker Springel , Patricia B. Tissera

The optical morphology of galaxies is strongly related to galactic environment, with the fraction of early-type galaxies increasing with local galaxy density. In this work we present the first analysis of the galaxy morphology-density…

A large deep and nearly complete B<24.5 redshift sample is used to measure the change in distribution function of the stellar mass production rate in individual galaxies with redshift. The evolution of the star formation rate distribution…

Astrophysics · Physics 2009-10-30 Lennox L. Cowie , Esther M. Hu , Antoinette Songaila , Eiichi Egami

We present an analysis of the growth of stellar mass with cosmic time partitioned according to galaxy morphology. Using a well-defined catalog of 2150 galaxies based, in part, on archival data in the GOODS fields, we assign morphological…

Astrophysics · Physics 2009-11-10 K. Bundy , R. S. Ellis , C. J. Conselice

In this paper we present a detailed study of the structures and morphologies of a sample of 1188 massive galaxies with Mstar>10^10Msun between redshifts z=1-3 within the Ultra Deep Survey (UDS) region of the Cosmic Assembly Near-infrared…

We have carried out a stacking analysis with the COSMOS-Web catalogue on one of the deepest ever SCUBA-2 images at 850 microns, allowing us to estimate the mean submillimetre flux density for samples of galaxies split by stellar mass and…

Astrophysics of Galaxies · Physics 2026-05-21 Stephen Eales , Matthew Smith , Tom Bakx , Jordan D'Silva , Feng-Yuan Frey Liu , Aparna Venkateshwaran

Using high-resolution Hubble Space Telescope imaging data, we perform a visual morphological classification of $\sim 36,000$ galaxies at $z < 1$ in the DEVILS/COSMOS region. As the main goal of this study, we derive the stellar mass…

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