Open AccessRedshift and velocity dispersion of the cluster of galaxies around NGC 326
Author(s) -
Werner P. N.,
Worrall D. M.,
Birkinshaw M.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02677.x
Subject(s) - physics , velocity dispersion , astrophysics , redshift , galaxy , astronomy , galaxy cluster , dispersion (optics) , optics
Redshifts of several galaxies thought to be associated with NGC 326 are determined. The results confirm the presence of a cluster and find a mean redshift of and a line‐of‐sight velocity dispersion σ z =599 (+230,−110) km s −1 . The velocity dispersion and previously measured X‐ray gas temperature of kT ≃1.9 keV are consistent with the cluster σ z kT relation, and NGC 326 is seen to be a slowly moving member of the cluster.