scholarly journals The Mass‐to‐Light Ratio of Early‐Type Galaxies: Constraints from Gravitational Lensing in the Rich Cluster AC 114

1998 ◽  
Vol 499 (2) ◽  
pp. 600-607 ◽  
Author(s):  
Priyamvada Natarajan ◽  
Jean‐Paul Kneib ◽  
Ian Smail ◽  
Richard S. Ellis
Keyword(s):  
Gravitational Lensing ◽  
Early Type ◽  
Rich Cluster ◽  
The Rich

scholarly journals Measuring the Evolution of the M/L ratio from the Fundamental Plane in Cl 0024+16 at z=0.39

1996 ◽  
Vol 171 ◽  
pp. 233-240 ◽  
Author(s):  
Marijn Franx ◽  
Pieter G. van Dokkum
Keyword(s):  
Luminosity Function ◽  
Evolutionary Models ◽  
Early Type ◽  
Rich Cluster ◽  
Fundamental Plane ◽  
Evolution Of Galaxies ◽  
Cluster Environment ◽  
Dynamical Properties ◽  
The Rich

The existence of the Fundamental Plane of early-type galaxies implies that the M/L ratios of early-types are well behaved. It provides therefore an important tool to measure the evolution of the M/L ratio with redshift. These measurements, in combination with measurements of the evolution of the luminosity function, can be used to constrain the mass evolution of galaxies.We present the Fundamental Plane relation measured for galaxies in the rich cluster CL 0024+16 at z=0.391. The galaxies satisfy a tight Fundamental Plane, with relatively low scatter (15 %). The M/L is 31 ± 12 % lower than the M/L measured in Coma, which is consistent with simple evolutionary models. Hence, galaxies with very similar dynamical properties existed at a z=0.4.More, and deeper data are needed to measure the evolution of the slope and the scatter of the Fundamental Plane to higher accuracy. Furthermore, data on the richest nearby clusters would be valuable to test the hypothesis that the Fundamental Plane is independent of cluster environment.

scholarly journals Spectroscopy of arcs in the rich cluster Abell 963

1991 ◽  
Vol 249 (1) ◽  
pp. 184-190 ◽  
Author(s):  
Richard Ellis ◽  
Jeremy Allington-Smith ◽  
Ian Smail
Keyword(s):  
Rich Cluster ◽  
The Rich

scholarly journals Spatially Resolved Spectroscopy of Starburst and Post-Starburst Galaxies in the Rich z ∼0.55 Cluster CL 0016+16

2010 ◽  
Vol 27 (3) ◽  
pp. 360-373 ◽  
Author(s):  
Michael B. Pracy ◽  
Warrick J. Couch ◽  
Harald Kuntschner
Keyword(s):  
Age Distribution ◽  
Starburst Galaxies ◽  
Small Sample ◽  
Spectral Signature ◽  
Rich Cluster ◽  
Spatially Resolved ◽  
Radial Profiles ◽  
Field Samples ◽  
The Rich ◽  
Spatially Resolved Spectroscopy

AbstractWe have used the Low Resolution Imaging Spectrograph on the W. M. Keck I telescope to obtain spatially resolved spectroscopy of a small sample of six ‘post-starburst’ and three ‘dusty-starburst’ galaxies in the rich cluster CL 0016+16 at z=0.55. We use this to measure radial profiles of the Hδ and [OII]λ3727 lines which are diagnostic probes of the mechanisms that give rise to the abrupt changes in star formation rates in these galaxies. In the post-starburst sample we are unable to detect any radial gradients in the Hδ line equivalent width — although one galaxy exhibits a gradient from one side of the galaxy to the other. The absence of Hδ gradients in these galaxies is consistent with their production via interaction with the intracluster medium; however, our limited spatial sampling prevents us from drawing robust conclusions. All members of the sample have early-type morphologies, typical of post-starburst galaxies in general, but lack the high incidence of tidal tails and disturbances seen in local field samples. This argues against a merger origin and adds weight to a scenario where truncation by the intra-cluster medium is at work. The post-starburst spectral signature is consistent over the radial extent probed with no evidence of [OII]λ3727 emission and strong Hδ absorption at all radii, i.e. the post-starburst classification is not an aperture effect. In contrast the ‘dusty-starburst’ sample shows a tendency for a central concentration of [OII]λ3727 emission. This is most straightforwardly interpreted as the consequence of a central starburst. However, other possibilities exist such as a non-uniform dust distribution (which is expected in such galaxies) and/or a non-uniform starburst age distribution. The members of the sample exhibit late-type and irregular morphologies.

scholarly journals A TALE OF A RICH CLUSTER ATz∼ 0.8 AS SEEN BY THE STAR FORMATION HISTORIES OF ITS EARLY-TYPE GALAXIES

2014 ◽  
Vol 797 (2) ◽  
pp. 136 ◽  
Author(s):  
Anna Ferré-Mateu ◽  
Patricia Sánchez-Blázquez ◽  
Alexandre Vazdekis ◽  
Ignacio G. de la Rosa
Keyword(s):  
Star Formation ◽  
Early Type ◽  
Rich Cluster ◽  
Star Formation Histories

The Survival and Destruction of X‐Ray Coronae of Early‐Type Galaxies in Rich Cluster Environments: A Case Study of A1367

2005 ◽  
Vol 619 (1) ◽  
pp. 169-177 ◽  
Author(s):  
M. Sun ◽  
A. Vikhlinin ◽  
W. Forman ◽  
C. Jones ◽  
S. S. Murray
Keyword(s):  
Early Type ◽  
Rich Cluster ◽  
X Ray

scholarly journals Hubble Space TelescopePhotometry and Keck Spectroscopy of the Rich Cluster MS 1054−03: Morphologies, Butcher‐Oemler Effect, and the Color‐Magnitude Relation atz= 0.83

2000 ◽  
Vol 541 (1) ◽  
pp. 95-111 ◽  
Author(s):  
Pieter G. van Dokkum ◽  
Marijn Franx ◽  
Daniel Fabricant ◽  
Garth D. Illingworth ◽  
Daniel D. Kelson
Keyword(s):  
Rich Cluster ◽  
The Rich
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