Redshift and velocity dispersion of the cluster of galaxies around NGC 326
نویسندگان
چکیده
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 z = 0.0477 ± 0.0007 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.
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