New measurements of radial velocities in clusters of galaxies-V


Autoria(s): PROUST, D.; CAPELATO, H. V.; LIMA NETO, G. B.; SODRE JR., L.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/04/2012

18/04/2012

2010

Resumo

As a part of our galaxy-cluster redshift survey, we present a set of 79 new velocities in the 4 clusters Abell 376, Abell 970, Abell 1356, and Abell 2244, obtained at Haute-Provence observatory. This set now completes our previous analyses, especially for the first two clusters. Data on individual galaxies are presented, and we discuss some cluster properties. For A376, we obtained an improved mean redshift (z) over bar = 0.04750 with a velocity dispersion of sigma(V) = 860 km s(-1). For A970, we have (z) over bar = 0.05875 with sigma(V) = 881 km s(-1). We show that the A1356 cluster is not a member of the ""Leo-Virgo"" supercluster at a mean redshift (z) over bar = 0.112 and should be considered just as a foreground group of galaxies at (z) over bar = 0.0689, as well as A1435 at (z) over bar = 0.062. We obtain (z) over bar = 0.09962 for A2244 with sigma(V) = 965 km s(-1). The relative proximity of clusters A2244 and A2245 ((z) over bar = 0.08738, sigma(V) = 992 km s(-1)) suggests that these could be members of a supercluster that would include A2249; however, from X-ray data there is no indication of interaction between A2244 and A2245.

FAPESP

CNPq

Identificador

ASTRONOMY & ASTROPHYSICS, v.515, 2010

0004-6361

http://producao.usp.br/handle/BDPI/15666

10.1051/0004-6361/200912078

http://dx.doi.org/10.1051/0004-6361/200912078

Idioma(s)

eng

Publicador

EDP SCIENCES S A

Relação

Astronomy & Astrophysics

Direitos

closedAccess

Copyright EDP SCIENCES S A

Palavras-Chave #galaxies: distances and redshifts #galaxies: cluster: general #galaxies: clusters: individual: Abell 376 #galaxies: clusters: individual: Abell 970 #galaxies: clusters: individual: Abell 1356 #galaxies: clusters: individual: Abell 2244 #SUPERCLUSTER-VOID NETWORK #DIGITAL SKY SURVEY #X-RAY-CLUSTERS #ABELL CLUSTERS #RICH CLUSTERS #CATALOG #MASS #DISPERSIONS #REDSHIFTS #PROFILES #Astronomy & Astrophysics
Tipo

article

original article

publishedVersion