Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430701e&link_type=abstract
American Astronomical Society, AAS Meeting #214, #307.01; Bulletin of the American Astronomical Society, Vol. 41, p.730
Astronomy and Astrophysics
Astronomy
Scientific paper
At the cores of massive galaxy clusters, many processes such as high galaxy velocity dispersions and stripping from the intracluster medium, may conspire so as to limit the amount current star formation in galaxies. However, in the lower density environments, such as in the field and low mass groups, the relative excess of actively star formating galaxies is plausible and well documented. We are now also beginning to find star formation in moderate density environments, such as filaments and cluster outskirts. Abell 1763 is a nearby rich galaxy cluster (z 0.2) hosting a filament that stretches towards the direction of the neighboring cluster, Abell 1770. Using Spitzer MIPS data we have recently discovered that in the filament galaxies there is an increased fraction of star formation relative to the cluster core. We present Optical, NIR, MIR, and Radio observations which further quantify our original discovery.
Edwards Louise O. V.
Fadda Dario
Frayer David
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