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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 661092.0, MPI für Astronomie / Publikationen_mpia
Extreme host galaxy growth in powerful early-epoch radio galaxies
Authors:Barthel, Peter; Haas, Martin; Leipski, Christian; Wilkes, Belinda
Date of Publication (YYYY-MM-DD):2012
Title of Journal:The Astrophysical Journal Letters
Volume:757
Issue / Number:2
Start Page:id. L26
Review Status:not specified
Audience:Not Specified
Abstract / Description:During the first half of the universe's life, a heyday of star formation must have occurred because many massive galaxies are in place after that epoch in cosmic history. Our observations with the revolutionary Herschel Space Observatory reveal vigorous optically obscured star formation in the ultra-massive hosts of many powerful high-redshift 3C quasars and radio galaxies. This symbiotic occurrence of star formation and black hole driven activity is in marked contrast to recent results dealing with Herschel observations of X-ray-selected active galaxies. Three archetypal radio galaxies at redshifts 1.132, 1.575, and 2.474 are presented here, with inferred star formation rates of hundreds of solar masses per year. A series of spectacular coeval active galactic nucleus/starburst events may have formed these ultra-massive galaxies and their massive central black holes during their relatively short lifetimes.
Free Keywords:galaxies: formation; galaxies: high-redshift; galaxies: starburst; infrared: galaxies
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2012ApJ...757L..26B [ID No:1]
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