TY - JOUR
T1 - The Herschel Filament
T2 - a signature of the environmental drivers of galaxy evolution during the assembly of massive clusters at z=0.9
AU - Coppin, Kristen
AU - Geach, James
AU - Webb, Tracy
AU - Faloon, Ashley
AU - Yan, Renbin
AU - O'Donnell, Daniel
AU - Ouellette, Nathalie
AU - Egami, Eiichi
AU - Ellingson, Erica
AU - Gilbank, David
AU - Hicks, Amalia
AU - Felipe Barrientos, L.
AU - Yee, Howard
AU - Gladders, Michael
PY - 2012
Y1 - 2012
N2 - We have discovered a 2.5 Mpc (projected) long filament of infrared-bright galaxies connecting two of the three ~5x10^14 Msun clusters making up the RCS 2319+00 supercluster at z=0.9. The filament is revealed in a deep Herschel Spectral and Photometric Imaging REceiver (SPIRE) map that shows 250-500um emission associated with a spectroscopically identified filament of galaxies spanning two X-ray bright cluster cores. We estimate that the total (8-1000um) infrared luminosity of the filament is Lir~5x10^12 Lsun, which, if due to star formation alone, corresponds to a total SFR 900 Msun/yr. We are witnessing the scene of the build-up of a >10^15 Msun cluster of galaxies, seen prior to the merging of three massive components, each of which already contains a population of red, passive galaxies that formed at z>2. The infrared filament demonstrates that significant stellar mass assembly is taking place in the moderate density, dynamically active circumcluster environments of the most massive clusters at high-redshift, and this activity is concomitant with the hierarchical build-up of large scale structure.
AB - We have discovered a 2.5 Mpc (projected) long filament of infrared-bright galaxies connecting two of the three ~5x10^14 Msun clusters making up the RCS 2319+00 supercluster at z=0.9. The filament is revealed in a deep Herschel Spectral and Photometric Imaging REceiver (SPIRE) map that shows 250-500um emission associated with a spectroscopically identified filament of galaxies spanning two X-ray bright cluster cores. We estimate that the total (8-1000um) infrared luminosity of the filament is Lir~5x10^12 Lsun, which, if due to star formation alone, corresponds to a total SFR 900 Msun/yr. We are witnessing the scene of the build-up of a >10^15 Msun cluster of galaxies, seen prior to the merging of three massive components, each of which already contains a population of red, passive galaxies that formed at z>2. The infrared filament demonstrates that significant stellar mass assembly is taking place in the moderate density, dynamically active circumcluster environments of the most massive clusters at high-redshift, and this activity is concomitant with the hierarchical build-up of large scale structure.
U2 - 10.1088/2041-8205/749/2/L43
DO - 10.1088/2041-8205/749/2/L43
M3 - Article
SN - 0004-637X
VL - 749
JO - The Astrophysical Journal
JF - The Astrophysical Journal
M1 - L43
ER -