INVESTIGADORES
MURIEL Hernan
artículos
Título:
Alignment effects of clusters of galaxies
Autor/es:
LAMBAS, DIEGO G.; NICOTRA, MARIANO; MURIEL, HERNAN; RUIZ, LUCIA
Revista:
ASTRONOMICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 1990 vol. 100 p. 1006 - 1013
ISSN:
0004-6256
Resumen:
The measurement os 204 position angles of the brightest cluster galaxies
in a sample of southern clusters is presented. Cluster-cluster alignment
effects in this sample are analyzed and this is extended with a previous
sample of Abell clusters in the northern hemisphere. Results suggest a
weak but statically significant signal of alignment of the brightest
galaxy in a cluster with the projected vector toward the
nearest-neighbor cluster. The anistropy detected amounts approximately
to a 30 percent excess of brightest cluster galaxies pointing to the
nearest cluster of galaxies. The mean acute angle between the galaxy
position angle and the direction toward the nearest neighbor is 30 + or
-2 deg, or less. The scale of the detected anisotropy is D approximately
equal to 15 Mpc/h.