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Star Formation in Quasar Host Galaxies at Redshift 6: Millimeter Surveys and New Insights from ALMA

Published online by Cambridge University Press:  21 March 2013

Ran Wang ,
Jeff Wagg ,
Chris L. Carilli ,
Fabian Walter ,
Xiaohui Fan ,
Frank Bertoldi ,
Dominik. A. Riechers ,
Alain Omont ,
Karl M. Menten  and
Pierre Cox
...Show all authors
Ran Wang
Affiliation:
National Radio Astronomy Observatory, PO Box 0, Socorro, NM, USA87801, email: rwang@nrao.edu Steward Observatory, University of Arizona, 933 N Cherry Ave., Tucson, AZ, 85721, USA Jansky Fellow
Jeff Wagg
Affiliation:
European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago 19, Chile
Chris L. Carilli
Affiliation:
National Radio Astronomy Observatory, PO Box 0, Socorro, NM, USA87801, email: rwang@nrao.edu
Fabian Walter
Affiliation:
Max-Planck-Institute for Astronomy, Königsstuhl 17, 69117 Heidelberg, Germany
Xiaohui Fan
Affiliation:
Steward Observatory, University of Arizona, 933 N Cherry Ave., Tucson, AZ, 85721, USA
Frank Bertoldi
Affiliation:
Argelander-Institut für Astronomie, University of Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Dominik. A. Riechers
Affiliation:
Astronomy Department, Cornell University, 220 Space Sciences Building, Ithaca, NY 14853, USA
Alain Omont
Affiliation:
Institut d'Astrophysique de Paris, CNRS and Universite Pierre et Marie Curie, Paris, France
Karl M. Menten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 71, 53121 Bonn, Germany
Pierre Cox
Affiliation:
Institute de Radioastronomie Millimetrique, St. Martin d'Heres, F-38406, France
Michael A. Strauss
Affiliation:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ, USA, 08544
Desika Narayanan
Affiliation:
Steward Observatory, University of Arizona, 933 N Cherry Ave., Tucson, AZ, 85721, USA
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Abstract

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We have been carrying out a systematic survey of the star formation and ISM properties in the host galaxies of z∼6 quasars. Our 250 GHz observations, together with available data from the literature, yield a sample of 14 z∼6 quasars that are bright in millimeter dust continuum emission with estimated FIR luminosities of a few 1012 to 1013 L⊙. Most of these millimeter-detected z∼6 quasars have also been detected in molecular CO line emission, indicating molecular gas masses on order of 1010 M⊙. We have searched for [C II] 158 micron fine structure line emission toward four of the millimeter bright z∼6 quasars with ALMA and all of them have been detected. All these results suggest massive star formation at rates of about 600 to 2000 M⊙ yr−1 over the central few kpc region of these quasar host galaxies.

Keywords

quasars: general — galaxies: starburst — galaxies: evolution — submillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 184 - 187
Copyright
Copyright © International Astronomical Union 2013

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