SIMBAD references

2001AJ....121.1294B - Astron. J., 121, 1294-1305 (2001/March-0)

A kinematic search for bound populations around brightest cluster members in a sample of 52 clusters of galaxies.

BOTTINI D.

Abstract (from CDS):

We measured the radial velocities of 265 galaxies in the field of 52 clusters in the redshift range 0.05<z<0.25. In a 93% complete sample of galaxies close to the brightest cluster members (BCMs; d<40 kpc) we found that the percentage (43±9%) of galaxies with |dV|<300 km.s–1 is higher than the one (28±4%) of a control sample of more distant galaxies. Moreover, we found that the velocity dispersion (576+68–77 km.s–1) of the galaxies in the inner sample is lower than the one (866+52–55 km.s–1) of the control sample. The sample's velocity dispersion is also lower than the expectation from the fit of the velocity dispersion profile of all data combined in a pseudocluster with dynamical models of the cluster mass distribution. We discuss these results in the light of the existence of a bound population of galaxies that will eventually merge with the BCM as a general feature of clusters of galaxies.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Distances and Redshifts - Galaxies: Kinematics and Dynamics

Nomenclature: Table 2: [B2001] ACO NNNN A, [B2001] MS HHMM+DDMM A, N=265.

Status in Simbad:  will not be processed

Simbad objects: 53

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