Intracluster light at z~0.25 from SDSS imaging data

Details Intracluster light at z~0.25 from SDSS imaging data Intracluster light at z~0.25 from SDSS imaging data

2004-04-16

arxiv.org/abs/astro-ph/0404326v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures. Use iaus style. To appear in the proceedings of "IAU Colloquium 195 - Outskirts of galaxy clusters: intens

Scientific paper

10.1017/S174392130400047X

We investigate the broadband optical emission of diffuse intergalactic stars in galaxy clusters at z~0.25 by means of an image stacking technique. The images of 654 clusters, selected with the max-BCG algorithm from a subsample of the SDSS-Data Release 1 (DR1), have been stacked after masking all the sources detected down to very low S/N. The resulting images in the g, r and i bands provide reliable photometric data at the level of >=30 mag arcsec^-2 (r band), out to >~ 600 kpc from the Brightest Cluster Galaxy (BCG). Our analysis shows that: i) the IntraCluster Light (ICL) is much more concentrated than the galaxy light, contributing ~30% of the total cluster optical emission at R=100 kpc, but less than 10% at R>500 kpc; ii) the ICL contributes between 15 and 20% of the total cluster optical luminosity between the optical radius (mu_r=25 mag arcsec^-2) of the BCG and 500 kpc; iii) the colours of the ICL are consistent with the global colours of the cluster galaxies, with little evidence for redder g-r.

Affiliated with

Also associated with

No associations

Rating

Intracluster light at z~0.25 from SDSS imaging data 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 Intracluster light at z~0.25 from SDSS imaging data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intracluster light at z~0.25 from SDSS imaging data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-399848