VLT and ACS Observations of RDCS J1252.9-2927: Dynamical Structure and Galaxy Populations in a Massive Cluster at z = 1.237
Ricardo Demarco
(1)
,
Piero Rosati
(2)
,
Christopher Lidman
(3)
,
M. Girardi
(4)
,
M. Nonino
(5)
,
Alessandro Rettura
(1)
,
V. Strazzullo
(2)
,
Arjen van der Wel
(1)
,
Holland C. Ford
(1)
,
V. Mainieri
(2)
,
Brad P. Holden
(6)
,
Spencer Adam Stanford
(7)
,
John P. Blakeslee
(8)
,
Raphaël Gobat
(2)
,
Marc Postman
(9)
,
P. Tozzi
(5)
,
Roderik A. Overzier
(1)
,
A. W. Zirm
(1)
,
N. Benítez
(10)
,
Nicole L. Homeier
(1)
,
Garth D. Illingworth
(6)
,
Leopoldo Infante
(11)
,
Myungkook J. Jee
(1)
,
Simona Mei
(12, 13, 14)
,
Felipe Menanteau
(15)
,
V. Motta
(16)
,
W. Zheng
(1)
,
Mark Clampin
(17)
,
G. Hartig
(9)
1
Department of Physics and Astronomy, Johns Hopkins University
2 ESO - European Southern Observatory
3 European Southern Observatory
4 Università degli studi di Trieste = University of Trieste
5 INAF-OATs - INAF-Osservatorio Astronomico di Trieste
6 UCO/Lick Observatoires
7 UC Davis - University of California [Davis]
8 WSU - Washington State University
9 STScI - Space Telescope Science Institute
10 IAA - Instituto de Astrofísica de Andalucía
11 UC - Pontificia Universidad Católica de Chile
12 UPCité - Université Paris Cité
13 GEPI - Galaxies, Etoiles, Physique, Instrumentation
14 Physique des Galaxies et Cosmologie
15 Department of Physics and Astronomy, State University of New Jersey
16 Departamento de Física y Meteorología, Universidad de Valparaíso
17 GSFC - NASA Goddard Space Flight Center
2 ESO - European Southern Observatory
3 European Southern Observatory
4 Università degli studi di Trieste = University of Trieste
5 INAF-OATs - INAF-Osservatorio Astronomico di Trieste
6 UCO/Lick Observatoires
7 UC Davis - University of California [Davis]
8 WSU - Washington State University
9 STScI - Space Telescope Science Institute
10 IAA - Instituto de Astrofísica de Andalucía
11 UC - Pontificia Universidad Católica de Chile
12 UPCité - Université Paris Cité
13 GEPI - Galaxies, Etoiles, Physique, Instrumentation
14 Physique des Galaxies et Cosmologie
15 Department of Physics and Astronomy, State University of New Jersey
16 Departamento de Física y Meteorología, Universidad de Valparaíso
17 GSFC - NASA Goddard Space Flight Center
Résumé
We present results from an extensive spectroscopic survey, carried out with VLT FORS, and from an extensive multiwavelength imaging data set from the HST Advanced Camera for Surveys and ground-based facilities, of the cluster of galaxies RDCS J1252.9-2927. We have spectroscopically confirmed 38 cluster members in the redshift range 1.22