The Herschel Filament : a signature of the environmental drivers of galaxy evolution during the assembly of massive clusters at z=0.9
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.
Item Type | Article |
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Date Deposited | 26 Jul 2024 17:08 |
Last Modified | 26 Jul 2024 17:08 |
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Read more research from the creator(s):
- Coppin, Kristen
- Geach, James
- Webb, Tracy
- Faloon, Ashley
- Yan, Renbin
- O'Donnell, Daniel
- Ouellette, Nathalie
- Egami, Eiichi
- Ellingson, Erica
- Gilbank, David
- Hicks, Amalia
- Felipe Barrientos, L.
- Yee, Howard
- Gladders, Michael
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