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相关论文: Near-Infrared Fundamental Plane of Elliptical Gala…

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Recent studies have shown that massive galaxies in the distant universe are surprisingly compact, with typical sizes about a factor of three smaller than equally massive galaxies in the nearby universe. It has been suggested that these…

宇宙学与河外天体物理 · 物理学 2015-05-28 Preethi Nair , Sidney van den Bergh , Roberto G. Abraham

I present some results of 3D spectroscopy for a small sample of dwarf elliptical galaxies, mostly members of small groups. The galaxies under consideration have a typical absolute magnitude of -18 (B-band), and at the Kormendy's relation…

宇宙学与河外天体物理 · 物理学 2015-05-20 Olga K. Sil'chenko

By exploting the data of three large surveys (WINGS, NFPS and SDSS), we present here a comparative analysis of the Fundamental Plane (FP hereafter) of the early-type galaxies (ETGs) belonging to 59 galaxy clusters in the redshift range…

The morphological types of galaxies in nine clusters in the redshift range 0.1<z<0.25 are derived from very good seeing images taken at the NOT and the La Silla Danish telescopes. With the purpose of investigating the evolution of the…

天体物理学 · 物理学 2009-10-31 G. Fasano , B. Poggianti , W. Couch , D. Bettoni , P. Kjaergaard , M. Moles

We present the results of combined optical and near-infrared photometry for the globular cluster systems of the giant ellipticals IC 4051 and NGC 3311. We use the reduced age-metallicity degeneracy in (V-I) vs.(V-H) color-color diagrams to…

天体物理学 · 物理学 2009-11-11 M. Hempel , D. Geisler , D. W. Hoard , W. E. Harris

Deep J, H and Ks photometry of the low Galactic latitude Norma cluster has been obtained with the 1.4-m Infrared Survey Facility (IRSF) and with SOFI on the NTT. Together with spectroscopy taken at the Anglo-Australian Observatory using…

天体物理学 · 物理学 2007-05-23 P. A. Woudt , A. P. Fairall , R. C. Kraan-Korteweg , J. Lucey , A. C. Schroeder , D. Burstein , M. L. McCall

We present a thorough quantitative analysis of the evolution of the colour-magnitude relation for early-type galaxies in 17 distant clusters with redshifts 0.31 < z < 1.27 using the Kodama & Arimoto (1997) evolutionary model for elliptical…

天体物理学 · 物理学 2007-05-23 T. Kodama , N. Arimoto , A. J. Barger , A. Aragon-Salamanca

The fundamental plane (FP) is a widely used tool to investigate the properties of early-type galaxies, and the tight relation between its parameters has spawned several cosmological applications, including its use as a distance indicator…

宇宙学与河外天体物理 · 物理学 2015-12-03 Benjamin Joachimi , Sukhdeep Singh , Rachel Mandelbaum

We have employed FORS1/2+VLT to acquire deep B and R CCD images of 16 dwarf elliptical galaxies in the direction of the Virgo cluster. For each dwarf we measure the R-band surface brightness fluctuation (SBF) magnitude \bar{m}_R and the…

天体物理学 · 物理学 2009-11-10 H. Jerjen , Bruno Binggeli , Fabio D. Barazza

We have used deep R- and B-band CCD images (with ~1.2 arcsec seeing) of the central ~700 arcmin^2 of the Coma cluster core (and an associated ~270 arcmin^2 control field) to study the early-type dwarf elliptical (dE) galaxy population.…

天体物理学 · 物理学 2007-05-23 Jeff Secker , William E. Harris , Pat Cote , J. B. Oke

We present the first results of a Spitzer IRAC (Infrared Array Camera) wide-field survey of the Coma cluster. The observations cover two fields of different galaxy densities; the first is a 0.733 deg^2 region in the core of the cluster…

天体物理学 · 物理学 2009-06-23 L. P. Jenkins , A. E. Hornschemeier , B. Mobasher , D. M. Alexander , F. E. Bauer

We present kinematics and stellar population properties of 17 dwarf early-type galaxies in the luminosity range -14> M_B> -19. Our sample fills the gap between the intensively studied giant elliptical and Local Group dwarf spheroidal…

天体物理学 · 物理学 2009-11-07 D. Thomas , R. Bender , U. Hopp , C. Maraston , L. Greggio

We present the analysis of the fundamental plane (FP) for a sample of 19 massive red-sequence galaxies ($M_{\star} >4\times10^{10} M_{\odot}$) in 3 known overdensities at $1.39<z<1.61$ from the KMOS Cluster Survey, a guaranteed time program…

We use 16 micron, Spitzer-IRS, blue peakup photometry of 50 early-type galaxies in the Coma cluster to define the mid-infrared colour-magnitude relation. We compare with recent simple stellar population models that include the mid-infrared…

天体物理学 · 物理学 2009-11-13 M. S. Clemens , A. Bressan , P. Panuzzo , R. Rampazzo , L. Silva , L. Buson , G. L. Granato

In this paper R-band photometric and velocity dispersion measurements for a sample of 452 elliptical and S0 galaxies in 28 clusters are used to construct a template D_n-sigma relation. This template relation is constructed by combining the…

We explore the possibility to calibrate massive cluster ellipticals as cosmological standard rods using the Fundamental Plane relation combined with a correction for luminosity evolution. Though cluster ellipticals certainly formed in a…

天体物理学 · 物理学 2009-10-30 R. Bender , R. P. Saglia , B. Ziegler , P. Belloni , L. Greggio , U. Hopp , G. Bruzual

We present the Fundamental Plane (FP) of early-type galaxies in the clusters of galaxies RXJ1415.1+3612 at z=1.013. This is the first detailed FP investigation of cluster early-type galaxies at redshift z=1. The distant cluster galaxies…

宇宙学与河外天体物理 · 物理学 2009-10-22 Alexander Fritz , Inger Jorgensen , Ricardo P. Schiavon , Kristin Chiboucas

We use the EAGLE cosmological simulations to perform a comprehensive and systematic analysis of the $z=0.1$ Fundamental Plane (FP), the tight relation between galaxy size, mass and velocity dispersion. We first measure the total mass and…

We report a systematic and statistically significant offset between the optical (g-z or B-I) colors of seven massive elliptical galaxies and the mean colors of their associated massive metal-rich globular clusters (GCs) in the sense that…

宇宙学与河外天体物理 · 物理学 2013-01-04 Paul Goudfrooij , J. M. Diederik Kruijssen

Here we present HST WFPC2 imaging of 14 kinematically--distinct core ellipticals to examine their globular cluster systems. In particular, we probe the galaxy central regions, for which we might expect to see the strongest signatures of…

天体物理学 · 物理学 2009-10-28 Duncan A. Forbes , Marijn Franx , Garth D. Illingworth , C. M. Carollo