Abell 970 galaxies radial velocities (Sodre+, 2001)

Details Abell 970 galaxies radial velocities (Sodre+, 2001) Abell 970 galaxies radial velocities (Sodre+, 2001)

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..33770428s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/377/428. Originally published in: 2001A&A...377..428S

Physics

Clusters: Galaxy, X-Ray Sources, Radial Velocities

Scientific paper

We present a dynamical analysis of the galaxy cluster Abell 970 based on a new set of radial velocities measured at ESO, Pic du Midi and Haute-Provence observatories. Our analysis indicates that this cluster has a substructure and is out of dynamical equilibrium. This conclusion is also supported by differences in the positions of the peaks of the surface density distribution and X-ray emission, as well as by the evidence of a large-scale velocity gradient in the cluster. We also found a discrepancy between the masses inferred with the virial theorem and those inferred with the X-ray emission, which is expected if the galaxies and the gas inside the cluster are not in hydrostatic equilibrium. Abell 970 has a modest cooling flow, as is expected if it is out of equilibrium. We propose that cooling flows may have an intermittent behaviour, with phases of massive cooling flows being followed by phases without significant cooling flows after the accretion of a galaxy group massive enough to disrupt the dynamical equilibrium in the centre of the clusters. A massive cooling flow will be established again, after a new equilibrium is achieved. (1 data file).

Affiliated with

Also associated with

No associations

Rating

Abell 970 galaxies radial velocities (Sodre+, 2001) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Abell 970 galaxies radial velocities (Sodre+, 2001), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abell 970 galaxies radial velocities (Sodre+, 2001) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1164205