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Related papers: Early-type galaxy density profiles from IllustrisT…

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We compare the isophote shape parameter $a_{4}$ of early-type galaxies (ETGs) between $z\sim1$ and 0 as a proxy for dynamics to investigate the epoch at which the dynamical properties of ETGs are established, using cluster ETG samples with…

Astrophysics of Galaxies · Physics 2017-01-18 Kazuma Mitsuda , Mamoru Doi , Tomoki Morokuma , Nao Suzuki , Naoki Yasuda , Saul Perlmutter , Greg Aldering , Joshua Meyers

Context: Early-type galaxies (ETGs) are divided into slow and fast rotators (FRs and SRs) according to the degree of ordered rotation of their stellar populations. Cosmological hydrodynamical simulations indicate that galaxies form as FRs…

Astrophysics of Galaxies · Physics 2023-03-29 Michal Bílek , Pierre-Alain Duc , Elisabeth Sola

Observations of galaxy isophotes, longs-slit kinematics and high-resolution photometry suggested a possible dichotomy between two distinct classes of E galaxies. But these methods are expensive for large galaxy samples. Instead,…

Astrophysics of Galaxies · Physics 2016-09-23 Michele Cappellari

We investigate the total mass density slope evolution in massive early-type galaxies (ETGs) over the last 6.5 billion years ($0 < z < 0.75$). We perform a detailed dynamical analysis of approximately 200 ETGs spanning the redshift range…

Astrophysics of Galaxies · Physics 2026-02-12 Pritom Mozumdar , Michele Cappellari , Christopher D. Fassnacht , Tommaso Treu

Dust in Early-Type galaxies (ETGs) may originate from internal or external sources. In this paper we study the stellar populations of particularly dusty ETGs to search for evidence of the dust's origin. Using the Southern African Large…

Astrophysics of Galaxies · Physics 2026-04-08 Ron W. Savage , Anne E. Sansom , David H. W. Glass

We present a systematic study of the internal mass structure of early-type galaxies (ETGs) based on 106 galaxy-scale strong gravitational lenses with background quasars, all having spectroscopic redshifts. From this parent sample, we select…

Astrophysics of Galaxies · Physics 2026-02-17 Ziyu Guo , Yun Chen , Yiping Shu , Jiaze Gao , Hui Li , Zizhao He , Jun Wang

We present stellar kinematics of 22 nearby early-type galaxies (ETGs), based on two-dimensional (2D) absorption line stellar spectroscopy out to ~2-4 R_e (effective radii), as part of the ongoing SLUGGS Survey. The galaxies span a factor of…

We study the total mass-density profile for a sample of 14 fast-rotator early-type galaxies (stellar masses $10.2<\log M_\ast/M_\odot<11.7$). We combine observations from the SLUGGS and Atlas3D surveys to map out the stellar kinematics in…

We present a sample of 212 early-type galaxies (ETGs) at redshifts $0.25 < z < 0.75$. We combine deep integral-field spectroscopy from the MUSE-DEEP survey with high-resolution HST imaging to study the structure, kinematics, and stellar…

Astrophysics of Galaxies · Physics 2025-10-29 Pritom Mozumdar , Michele Cappellari , Christopher D. Fassnacht , Tommaso Treu

We study the origin of the scaling relations of early-type galaxies (ETGs) by constructing detailed models of the stellar dynamics for the K-band selected, volume-limited ATLAS3D sample of 263 nearby ETGs, spanning a large range of masses…

Early-type galaxies provide unique tests for the predictions of the cold dark matter cosmology and the baryonic physics assumptions entering models for galaxy formation. In this work, we use the Illustris simulation to study correlations of…

Early-type galaxies (ETGs, i.e. elliptical and lenticular galaxies) differ in their amount of rotational support -- some are purely supported by velocity dispersion, while others show pronounced ordered rotation. Cosmological hydrodynamical…

Astrophysics of Galaxies · Physics 2024-05-09 Michal Bilek , Pierre-Alain Duc , Elisabeth Sola

We present an analysis of the stellar populations of 102 visually-selected early-type galaxies (ETGs) with spectroscopic redshifts (0.3<z<1.5) from observations in the Early Release Science program with the Wide Field Camera 3 (WFC3) on…

Astrophysics of Galaxies · Physics 2015-06-23 M. Rutkowski , H. Jeong , S. H. Cohen , S. Kaviraj , R. E. Ryan, , R. A. Windhorst , A. Koekemoer , N. P. Hathi , M. A. Dopita , S. K. Yi

We present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22um and Galaxy Evolution Explorer (GALEX) far-ultraviolet emission. We…

We use high spatial resolution stellar velocity maps from the Gemini GMOS integral-field spectrograph (IFS) and wide-field velocity maps from the McDonald Mitchell IFS to study the stellar velocity profiles and kinematic misalignments from…

Astrophysics of Galaxies · Physics 2020-03-11 Irina Ene , Chung-Pei Ma , Jonelle L. Walsh , Jenny E. Greene , Jens Thomas , John P. Blakeslee

In this paper we investigate the mass assembly history of ultramassive (Mstar > 10^11Msun) dense (Sigma = Mstar/(2*pi*Re^2) > 2500 Msun/pc^2) early-type galaxies (ETGs) over the last 9 Gyr. We have traced the evolution of the number density…

Astrophysics of Galaxies · Physics 2016-08-17 A. Gargiulo , P. Saracco , S. Tamburri , I. Lonoce , F. Ciocca

We study the behavior of the dynamical and stellar mass inside the effective radius of early-type galaxies (ETGs) as a function of environment considering Newtonian dynamics, different surface--brightness profiles, different initial mass…

We define a volume limited sample of over 14,000 early-type galaxies (ETGs) selected from data release six of the Sloan Digital Sky Survey. The density of environment of each galaxy is robustly measured. By comparing narrow band spectral…

Astrophysics · Physics 2009-11-13 M. S. Clemens , A. Bressan , B. Nikolic , R. Rampazzo

We make use of interferometric CO and HI observations, and optical integral-field spectroscopy to probe the origin of the molecular and ionised interstellar medium (ISM) in local early-type galaxies (ETGs). We find that 36\pm5% of our…

We provide observational evidence that galaxy mergers significantly affect stellar kinematics of early-type galaxies (ETGs) such as specific stellar angular momentum within the half-light radius ($\lambda_{R_e}$) and kinematic misalignment…

Astrophysics of Galaxies · Physics 2022-02-09 Yongmin Yoon , Changbom Park , Haeun Chung , Richard R. Lane