中文
相关论文

相关论文: Stellar population gradients in early-type cluster…

200 篇论文

We resolve spatially the star formation history of 300 nearby galaxies from the CALIFA integral field survey to investigate: a) the radial structure and gradients of the present stellar populations properties as a function of the Hubble…

In order to study stellar populations and galaxy structures at intermediate and high redshift (z=0.2-2.0) and link these properties to those of low redshift galaxies, there is a need for well-defined local reference samples. Especially for…

星系天体物理 · 物理学 2018-11-07 Inger Jorgensen , Kristin Chiboucas , Kristi Webb , Charity Woodrum

Using optical-optical and optical-NIR colors, we analyze the radial dependence of age and metallicity inside massive (M* > 10^10.5 MSun), low-redshift (z<0.1), early-type galaxies (ETGs), residing in both high-density group regions and the…

宇宙学与河外天体物理 · 物理学 2015-05-30 F. La Barbera , I. Ferreras , R. R. de Carvalho , P. A. A. Lopes , A. Pasquali , I. G. de la Rosa , G. De Lucia

We present a study of the inner (out to $\sim$1 R$_{\mathrm{eff}}$) stellar populations of 9 shell galaxies. We derive stellar population parameters from long slit spectra by both analyzing the Lick indices of the galaxies and by fitting…

星系天体物理 · 物理学 2017-10-11 S. Carlsten , G. K. T. Hau , A. Zenteno

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…

星系天体物理 · 物理学 2025-10-29 Pritom Mozumdar , Michele Cappellari , Christopher D. Fassnacht , Tommaso Treu

We study the effect of inclination on the apparent brightness of star-forming galaxies in spectral passbands that are commonly used as star-formation indicators. As diagnostics we use mass-to-light ratios in three passbands: the UV…

We present FLAMES/GIRAFFE integral field spectroscopy of 30 galaxies in the massive cluster Abell 1689 at z = 0.183. Conducting an analysis similar to that of ATLAS3D, we extend the baseline of the kinematic morphology-density relation by…

宇宙学与河外天体物理 · 物理学 2012-12-06 F. D'Eugenio , R. C. W. Houghton , R. L. Davies , E. Dalla Bontà

We aim to identify the stellar populations (mostly red giants and young stars) detected in the ISOGAL survey at 7 and 15micron towards a field (LN45) in the direction l=-45, b=0.0. The sources detected in the survey of the Galactic plane by…

天体物理学 · 物理学 2009-11-13 S. Ganesh , A. Omont , U. C. Joshi , K. S. Baliyan , M. Schultheis , F. Schuller , G. Simon

Aims.We study the photometric and structural properties of the star cluster system in the late type Sc spiral NGC 3370. Methods. BVI observations from the Advanced Camera for Surveys on board of HST are used to analyse in detail the…

宇宙学与河外天体物理 · 物理学 2015-05-13 Michele Cantiello , Enzo Brocato , John P. Blakeslee

We study stellar population parameters of a sample of 13 dwarf galaxies located in poor groups of galaxies using high resolution spectra observed with VIMOS at the ESO-VLT. LICK-indices were compared with Simple Stellar Population models to…

宇宙学与河外天体物理 · 物理学 2015-05-20 R. Grützbauch , F. Annibali , R. Rampazzo , A. Bressan , W. W. Zeilinger

We present an analysis of correlations between integrated properties of galaxies and their populations of young massive star clusters. Data for 21 nearby galaxies presented by Larsen & Richtler (1999) are used together with literature data…

天体物理学 · 物理学 2007-05-23 S. S. Larsen , T. Richtler

We present detailed integral field unit (IFU) observations of the central few kiloparsecs of the ionised nebulae surrounding four active central cluster galaxies (CCGs) in cooling flow clusters (Abell 0496, 0780, 1644 and 2052). Our sample…

宇宙学与河外天体物理 · 物理学 2015-06-15 S. I. Loubser , I. K. Soechting

We present a study on the radial profiles of D4000,luminosity-weighted stellar ages $\tau_L$,and luminosity-weighted stellar metallicities $[Z/H]_L$ of 3654 nearby galaxies($0.01<z<0.15$)using the IFU spectroscopic data from the MaNGA…

星系天体物理 · 物理学 2020-06-12 Guangwen Chen , Hong-Xin Zhang , Xu Kong , Zesen Lin , Zhixiong Liang , Xinkai Chen , Zuyi Chen , Zhiyuan Song

We have measured central line strengths for a magnitude-limited sample of early-type galaxies in the Fornax cluster, comprising 11 elliptical (E) and 11 lenticular (S0) galaxies, more luminous than MB=-17. When compared with single-burst…

天体物理学 · 物理学 2009-10-31 Harald Kuntschner

In this paper we study the stellar populations of 356 bright, $M_{r}$ $\leq$ -19, Coma cluster members located in a 2 degree field centred on the cluster core using SDSS DR7 spectroscopy. For the quiescent galaxies we find strong…

宇宙学与河外天体物理 · 物理学 2015-05-20 James Price , Steve Phillipps , Avon Huxor , Russell J Smith , John R Lucey

We have acquired intermediate resolution spectra in the 3700-7000 A wavelength range for a sample of 65 early-type galaxies predominantly located in low density environments, a large fraction of which show emission lines. The spectral…

天体物理学 · 物理学 2007-05-23 F. Annibali , A. Bressan , R. Rampazzo , W. Zeilinger , L. Danese

We have selected a sample of local E+A galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 7 for follow up integral field spectroscopy with the Wide Field Spectrograph (WiFeS) on the ANU 2.3-m telescope. The sample was selected…

宇宙学与河外天体物理 · 物理学 2015-06-03 Michael B. Pracy , Matt S. Owers , Warrick J. Couch , Harald Kuntschner , Kenji Bekki , Frank Briggs , Phillip Lah , Martin Zwaan

This paper is part of a series devoted to the study of the stellar populations in brightest cluster galaxies (BCGs), aimed at setting constraints on the formation and evolution of these objects. We have obtained high signal-to-noise ratio,…

宇宙学与河外天体物理 · 物理学 2015-05-13 S. I. Loubser , P. Sanchez-Blazquez , A. E. Sansom , I. K. Soechting

Aims. We aim to characterize the properties of the stellar populations in the central few hundred parsecs of nearby galactic nuclei; specifically their age, mass, and 3D geometry. Methods. We use spatially resolved spectroscopic…

星系天体物理 · 物理学 2023-06-29 P. Vermot , J. Palouš , B. Barna , S. Ehlerová , M. R. Morris , R. Wünsch

To examine the evolution of the early-type galaxy population in the rich cluster Abell 2390 at z=0.23 we have gained spectroscopic data of 51 elliptical and lenticular galaxies with MOSCA at the 3.5 m telescope on Calar Alto Observatory.…

天体物理学 · 物理学 2007-05-23 A. Fritz , B. L. Ziegler , R. G. Bower , I. Smail , R. L. Davies