Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1

Details Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1 Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21932902s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #329.02

Astronomy and Astrophysics

Astronomy

Scientific paper

We have investigated post-merger signatures of red-sequence galaxies in rich Abell clusters at z 0.1. u',g',r' deep images and medium-resolution galaxy spectra are taken for A119, A2670, A3330 and A389 with MOSAIC 2 CCD and Hydra MOS mounted on Blanco 4-m telescope at CTIO. Post-merger signatures are identified by visual inspection with their asymmetric features, e.g. tails, rings and discontinuous halo structures. We found that about 30% of bright (Mr < -19) red-sequence galaxies show post-merger signatures in four target clusters consistently. This is markedly lower than the value derived in the field ( 70% with field ellipticals, van Dokkum 2005). Among the featured galaxies, 20-40% of galaxies indicated traces of residual star formation with their UV deep images, probably induced by galaxy mergers and interactions. We also examined bulge-to-total ratio and asymmetry of the cluster member galaxies. In result, a large fraction of the featured galaxies turned out to be bulge-dominated systems and asymmetry in post-merger galaxies were larger than that of normal early-type galaxies on average. In this presentation, we will discuss implications of the results on the formation of red-sequcne galaxies in cluster environment.

Affiliated with

Also associated with

No associations

Rating

Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1 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 Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post-merger Signatures Of Red-sequence Galaxies In Rich Abell Clusters At Z 0.1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1580384