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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20140916T123000
DTEND;TZID=Atlantic/Canary:20140916T133000
UID:iactalks-663
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/663
CREATED:2014-09-16T12:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Intra-Cluster Light at the Frontier: Abell 2744
DESCRIPTION:Intra-Cluster Light at the Frontier: Abell 2744\nDr. Mireia Mon
 tes\n\nThe ultra-deep multiwavelength HST Frontier Fields coverage of the 
 Abell Cluster 2744 is used to derive the stellar population properties of 
 its intra-cluster light (ICL). The restframe colors of the ICL of this int
 ermediate redshift (z=0.3064) massive cluster are bluer (g-r=0.68 ±
 0.04; i-J=0.56±0.01) than those found in the stellar populations of
  its main galaxy members (g-r=0.83±0.01; i-J=0.75±0.01). Bas
 ed on these colors, we derive the following mean metallicity Z=0.018&plusm
 n;0.007 for the ICL. The ICL age is 6±3 Gyr younger than the averag
 e age of the most massive galaxies of the cluster. The fraction of stellar
  mass in the ICL component comprises at least 6% of the total stellar mass
  of the galaxy cluster. Our data is consistent with a scenario where the b
 ulk of the ICL of Abell 2744 has been formed relatively recently (z<1).
  The stellar population properties of the ICL suggest that this diffuse co
 mponent is mainly the result of the disruption of infalling galaxies with 
 similar characteristics in mass (M*~ 3x10^10 Msolar) and metallicity than 
 our own Milky Way. The amount of ICL mass in the central part of the clust
 er (<400 kpc) is equivalent to the disruption of 4-6 Milky Way-type gal
 axies.
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