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Related papers: The evolution of galaxy shapes in CANDELS: from pr…

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We study the evolution of global shapes of galaxies using cosmological simulations. The shapes refer to the components of dark matter (DM), stars and gas at the stellar half-mass radius. Most galaxies undergo a characteristic compaction…

Projected axis ratio measurements of 880 early-type galaxies at redshifts 1<z<2.5 selected from CANDELS are used to reconstruct and model their intrinsic shapes. The sample is selected on the basis of multiple rest-frame colors to reflect…

We report the identification of elongated (triaxial or prolate) galaxies in cosmological simulations at $z\simeq2$. These are preferentially low-mass galaxies ($M_s \le 10^{9.5} \ M_\odot$), residing in dark-matter (DM) haloes with strongly…

Astrophysics of Galaxies · Physics 2015-09-08 Daniel Ceverino , Joel Primack , Avishai Dekel

Spectroscopic + photometric redshifts, stellar mass estimates, and rest-frame colors from the 3D-HST survey are combined with structural parameter measurements from CANDELS imaging to determine the galaxy size-mass distribution over the…

We study galaxy shapes in the Illustris cosmological hydrodynamic simulation. We find that massive galaxies have a higher probability of being prolate. For galaxies with stellar mass larger than $10^{11}\rm M_{\odot}$, 35 out of total 839…

Astrophysics of Galaxies · Physics 2017-11-08 Hongyu Li , Shude Mao , Eric Emsellem , Dandan Xu , Volker Springel , Davor Krajnović

Hubble Space Telescope observations show that low-mass ($M_*=10^9-10^{10}M_{\odot}$) galaxies at high redshift ($z=1.0-2.5$) tend to be elongated (prolate) rather than disky (oblate) or spheroidal. This is explained in zoom-in cosmological…

Elliptical and S0 galaxies dominate the galaxy population in nearby rich clusters such as Coma. Studies of the evolution of the colors, M/L ratios, and line indices of early-type galaxies indicate that they have been a highly homogeneous,…

Astrophysics · Physics 2007-05-23 Pieter G. van Dokkum

According to the standard inside-out galaxy formation scenario, galaxies first form a dense core and then gradually assemble their outskirts. This implies that galaxies with similar central stellar mass densities might have evolutionary…

Astrophysics of Galaxies · Physics 2025-02-25 Lijun Chen , Hong-Xin Zhang

The intrinsic shape of galactic bulges in nearby galaxies provides crucial information to separate bulge types. We intended to derive accurate constraints to the intrinsic shape of bulges to provide new clues on their formation mechanisms…

Astrophysics of Galaxies · Physics 2018-02-07 L. Costantin , J. Méndez-Abreu , E. M. Corsini , M. C. Eliche-Moral , T. Tapia , L. Morelli , E. Dalla Bontà , A. Pizzella

Morphological classification of galaxies becomes increasingly challenging with redshift. We apply a hybrid supervised-unsupervised method to classify $\sim 14,000$ galaxies in the CANDELS fields at $0.2 \leq z \leq 2.4$ into spheroid, disk,…

Astrophysics of Galaxies · Physics 2025-01-27 I. Kolesnikov , V. M. Sampaio , R. R. de Carvalho , C. Conselice

We examine a sample of 1495 galaxies in the CANDELS fields to determine the evolution of two component galaxies, including bulges and discs, within massive galaxies at the epoch 1 < z < 3 when the Hubble sequence forms. We fit all of our…

A strictly empirical review is given of presently available data on the evolution of galaxy morphology. From HST observations of distant galaxies and ground-based observations of nearby ones observed at the same rest-frame wavelength it is…

Astrophysics · Physics 2007-05-23 Sidney van den Bergh

Many aspects concerning the formation of spiral and disc galaxies remain unresolved, despite their discovery and detailed study over the past $150$ years. As such, we present the results of an observational search for proto-spiral galaxies…

The intrinsic shape of galaxy clusters can be obtained through a combination of X-ray and Sunyaev-Zeldovich effect observations once cosmological parameters are assumed to be known. In this paper we discuss the feasibility of modelling…

Astrophysics · Physics 2009-11-11 M. Sereno , E. De Filippis , G. Longo , M. W. Bautz

A fundamental feature of galaxies is their structure, yet we are just now understanding the evolution of structural properties in quantitative ways. As such, we explore the quantitative non-parametric structural evolution of 16,778 galaxies…

Astrophysics of Galaxies · Physics 2021-10-13 A. Whitney , L. Ferreira , C. J. Conselice , K. Duncan

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

Galaxy morphologies in clusters have undergone a remarkable transition over the past several billion years. Distant clusters at $z \sim 0.4$ are filled with small spiral galaxies, many of which are disturbed and show evidence of multiple…

Astrophysics · Physics 2009-10-30 Ben Moore , George Lake , Neal Katz

We use high-resolution K-band VLT/HAWK-I imaging over 0.25 square degrees to study the structural evolution of massive early-type galaxies since z~1. Mass-selected samples, complete down to log(M/M_sun)~10.7 such that `typical' L* galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2012-12-20 Yu-Yen Chang , Arjen van der Wel , Hans-Walter Rix , Stijn Wuyts , Stefano Zibetti , Balasubramanian Ramkumar , Bradford P. Holden

Using the CANDELS photometric catalogs for the HST/ACS and WFC3, we identified massive evolved galaxies at $3 < z < 4.5$, employing three different selection methods. We find the comoving number density of these objects to be $\sim 2 \times…

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