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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…

(Abridged) We present a detailed study of the stellar populations of a volume-limited sample of early-type galaxies from SDSS, across a range of environments -- defined as the mass of the host dark matter halo. The stellar populations are…

宇宙学与河外天体物理 · 物理学 2015-05-18 Ben Rogers , Ignacio Ferreras , Anna Pasquali , Mariangela Bernardi , Ofer Lahav , Sugata Kaviraj

We present dynamical scaling relations, combined with the stellar population properties, for a subsample of about 6000 nearby galaxies with the most reliable dynamical models extracted from the full MaNGA sample of 10K galaxies. We show…

星系天体物理 · 物理学 2023-11-07 Kai Zhu , Shengdong Lu , Michele Cappellari , Ran Li , Shude Mao , Liang Gao , Junqiang Ge

The evolution of galaxies is imprinted in their stellar populations. Several stellar population properties in massive early-type galaxies have been shown to correlate with intrinsic galaxy properties like the galaxy's central velocity…

星系天体物理 · 物理学 2021-12-22 A. Feldmeier-Krause , I. Lonoce , W. L. Freedman

Radial trends of stellar populations in galaxies provide a valuable tool to understand the mechanisms of galaxy growth. In this paper, we present the first comprehensive analysis of optical-optical and optical-NIR colours, as a function of…

宇宙学与河外天体物理 · 物理学 2015-06-11 F. La Barbera , I. Ferreras , R. R. de Carvalho , G. Bruzual , S. Charlot , A. Pasquali , E. Merlin

We study the total density distribution in the central regions ($<\, 1$ effective radius, $R_{\rm e}$) of early-type galaxies (ETGs), using data from the SPIDER survey. We model each galaxy with two components (dark matter halo + stars),…

星系天体物理 · 物理学 2016-06-29 C. Tortora , F. La Barbera , N. R. Napolitano , A. J. Romanowsky , I. Ferreras , R. R. de Carvalho

[abridged] We study the dependence of the galaxy size evolution on morphology, stellar mass and large scale environment for a sample of 298 group and 384 field quiescent early-type galaxies from the COSMOS survey, selected from z~1 to the…

The aim of this paper is to set constraints of the epochs of early-type galaxy formation through the 'archaeology' of the stellar populations in local galaxies. Using our models of absorption line indices that account for variable abundance…

天体物理学 · 物理学 2009-07-09 D. Thomas , C. Maraston , R. Bender , C. Mendes de Oliveira

The environment is known to affect the formation and evolution of galaxies considerably best visible through the well-known morphology-density relationship. We study the effect of environment on the evolution of early-type galaxies for a…

宇宙学与河外天体物理 · 物理学 2015-05-27 Daniel Thomas

Spectral line indices for a sample of 290 nearby E and S0 galaxies are used to investigate the stellar populations of these galaxies. Relations are established between the line indices (Mg2, <Fe>, Hbeta) and the velocity dispersions, the…

天体物理学 · 物理学 2015-06-24 Inger Jorgensen

We have used a large sample of low-inclination spiral galaxies with radially-resolved optical and near-infrared photometry to investigate trends in star formation history with radius as a function of galaxy structural parameters. A maximum…

天体物理学 · 物理学 2009-05-29 Eric F. Bell , Roelof S. de Jong

We use stellar masses, photometry, lensing, and velocity dispersions to investigate empirical correlations for the final sample of 73 early-type lens galaxies (ETGs) from the SLACS survey. The traditional correlations (Fundamental Plane…

宇宙学与河外天体物理 · 物理学 2015-05-19 M. W. Auger , T. Treu , A. S. Bolton , R. Gavazzi , L. V. E. Koopmans , P. J. Marshall , L. A. Moustakas , S. Burles

Massive galaxies are key probes to understand how the baryonic matter evolves within the dark matter halos. We use the "archaeological" approach to infer the stellar population properties and star formation histories of the most massive (M…

星系天体物理 · 物理学 2016-07-13 Annalisa Citro , Lucia Pozzetti , Michele Moresco , Andrea Cimatti

We study the (M,sigma) and (M,Re) projections of the thin Mass Plane (MP) (M,sigma,Re) which describes the distribution of the galaxy population. The distribution of galaxy properties on the MP is characterized by: (i) a zone of exclusion…

Several dedicated surveys focusing on early-type galaxies (ETGs) reveal that significant fractions of them are detectable in all interstellar medium phases studied to date. We select ETGs from the Herschel Reference Survey that have both…

星系天体物理 · 物理学 2016-07-27 Sophia Lianou , Emmanuel Xilouris , Suzanne Madden , Pauline Barmby

To investigate star formation and assembly processes of massive galaxies, we present here a spatially-resolved stellar populations analysis of a sample of 45 elliptical galaxies (Es) selected from the CALIFA survey. We find rather flat age…

Using globular cluster (GC) kinematics and photometry data, we calibrate the scaling relation between the total galaxy mass (M_TOT including dark matter) and total globular cluster system mass (M_GCS) in a sample of 30 early-type galaxies…

星系天体物理 · 物理学 2019-06-12 Dong-Woo Kim , Nicholas James , Giuseppina Fabbiano , Duncan Forbes , Adebusola Alabi

We analyze the color gradients (CGs) of ~50000 nearby SDSS galaxies. From synthetic spectral models based on a simplified star formation recipe, we derive the mean spectral properties, and explain the observed radial trends of the color as…

宇宙学与河外天体物理 · 物理学 2015-05-18 C. Tortora , N. R. Napolitano , V. F. Cardone , M. Capaccioli , Ph. Jetzer , R. Molinaro

A comparison is carried out among the star formation histories of early-type galaxies (ETG) in fossil groups, clusters and low density environments. Although they show similar evolutionary histories, a significant fraction of the fossils…

宇宙学与河外天体物理 · 物理学 2015-05-14 I. G. de la Rosa , R. N. Proctor , C. Mendes de Oliveira , D. A. Forbes , R. Cid Fernandes , A. Mateus