2010/05/20 by M. Rex, T. D. Rawle, E. Egami +46 · 40 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Brightest cluster galaxy #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Luminosity #Luminous infrared galaxy #Peculiar galaxy #Population #Star formation #Stellar, planetary, and galactic studies #astro-ph.CO
paper · pdf · doi:10.1051/0004-6361/201014693
published in Astronomy and Astrophysics 518, L13 (EDP Sciences) · 8 pages with 4 figures. Accepted for publication in Astronomy and Astrophysics (Herschel special issue)
arxiv created 2010/05/20 · openalex publication_date 2010/07/01 · arxiv updated 2015/05/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The <i>Herschel<i/> Lensing Survey (HLS) takes advantage of gravitational lensing by massive galaxy clusters to sample a population of high-redshift galaxies which are too faint to be detected above the confusion limit of current far-infrared/submillimeter telescopes. Measurements from 100–500 <i>μ<i/>m bracket the peaks of the far-infrared spectral energy distributions of these galaxies, characterizing their infrared luminosities and star formation rates. We introduce initial results from our science demonstration phase observations, directed toward the Bullet cluster (1E0657-56). By combining our observations with LABOCA 870 <i>μ<i/>m and AzTEC 1.1 mm data we fully constrain the spectral energy distributions of 19 MIPS 24 <i>μ<i/>m-selected galaxies which are located behind the cluster. We find that their colors are best fit using templates based on local galaxies with systematically lower infrared luminosities. This suggests that our sources are not like local ultra-luminous infrared galaxies in which vigorous star formation is contained in a compact highly dust-obscured region. Instead, they appear to be scaled up versions of lower luminosity local galaxies with star formation occurring on larger physical scales.