Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21537806e&link_type=abstract
American Astronomical Society, AAS Meeting #215, #378.06; Bulletin of the American Astronomical Society, Vol. 42, p.588
Astronomy and Astrophysics
Astronomy
Scientific paper
Abell 1763 is a rich galaxy cluster at a redshift of z 0.23, and has a lower galaxy density companion (Abell 1770) at a similar redshift. Using Spitzer MIPS 24 micron data we have recently detected galaxies occupying a large filament that connects the two clusters. This was the first galaxy filament discovered directly from Mid-IR observations. The filament shows an excess of star forming galaxies relative to the cluster core and to its local field. Here we discuss deep X-ray and new 1.4GHz Radio observations which suggest a further, dynamic relationship between the filament galaxies and Abell 1763. We compare the star formation rates derived from the radio emission (total) to that based on the Far-IR (hidden) luminosity, discuss the level of AGN contamination, and study the environmental dependence of the active galaxies in this superstructure.
Edwards Louise O. V.
Fadda Dario
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