Galaxy mergers as a function of environment. Using the structuralparameters of residual images

Details Galaxy mergers as a function of environment. Using the structuralparameters of residual images Galaxy mergers as a function of environment. Using the structuralparameters of residual images

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011hsa6.conf..384h&link_type=abstract

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a new way to estimate the merger fraction of galaxies usingthe morphological parameters of galaxies.The merger fraction is the fraction of galaxies involved in a mergerepisode in some parent population, whichis usually a mass limited sample obtained via deep images of the sky.The sample we use is a mass limited sample (log M/M_&sun; > 9.0)obtained from the STAGES(Space Telescope A901/02 Galaxy EvolutionSurvey) HST/ACS F606W images of the A901/02 supercluster (z=0.165).This sample includes 719 galaxies in the cluster and 453 galaxiesin the field, of all morphological types.The main contribution from this work is that this is the first time inwhich the structural parameters of the residualimages, after the subtraction of a smooth Sérsic model of the moreluminous actor in the merger are explored.It results that the structural parameters of the residuals can indeedproduce a good merger sample, witha better statistical quality than samples obtained using themorphological properties of the direct images.In particular, the Gini index of the residuals is a very reliable mergerdiagnostic.The merger fraction is lowest in the very central regions of thecluster, and is very similarboth in the field and in the outskirts regions of the cluster.

Affiliated with

Also associated with

No associations

Rating

Galaxy mergers as a function of environment. Using the structuralparameters of residual images 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 Galaxy mergers as a function of environment. Using the structuralparameters of residual images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy mergers as a function of environment. Using the structuralparameters of residual images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-740517