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          Institute: MPI für Radioastronomie     Collection: Publikationen des MPI für Radioastronomie     Display Documents

ID: 125342.0, MPI für Radioastronomie / Publikationen des MPI für Radioastronomie
A 1.2 mm MAMBO/IRAM-30 m study of dust emission from optically luminous z approximate to 2 quasars
Authors:Omont, A.; Beelen, A.; Bertoldi, F.; Cox, P.; Carilli, C. L.; Priddey, R. S.; McMahon, R. G.; Isaak, K. G.
Date of Publication (YYYY-MM-DD):2003-02
Title of Journal:Astronomy & Astrophysics
Journal Abbrev.:Astron. Astrophys.
Issue / Number:3
Start Page:857
End Page:865
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report 250 GHz (1.2 mm) observations of redshift 1.8 < z < 2.8 optically luminous (M-B < -27.0), radio quiet quasars using the Max-Planck Millimeter Bolometer (MAMBO) array at the IRAM 30-metre telescope. Nine quasars were detected and for 26 quasars 3 σ flux density limits in the range 1.8 to 4 mJy were obtained. Adopting a typical dust temperature of 45 K, the millimeter emission implies far-infrared luminosities of order 10(13) L., and dust masses of &SIM;10(8) M.. Applying a statistical survival analysis to our total sample of 43 detected and 95 undetected quasars at z &AP; 2 and z &GSIM; 4, we find that there is no apparent difference in the far-infrared (FIR) luminosities, hence the star formation rates, of QSOs at z &AP; 2 and at 3.6 < z < 5. This differs from radio galaxies, for which the FIR luminosity was found to increase with redshift (Archibald et al. 2001). We furthermore find that there is no strong correlation between the far-infrared and optical luminosities, confirming previous results obtained on smaller samples.
Free Keywords:galaxies : formation, galaxies : starburst, galaxies : high-redshift, quasars : general, cosmology : observations, submillimeter
Comment of the Author/Creator:Date: 2003, FEB
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Radioastronomie
External Affiliations:CNRS, Inst Astrophys Paris, F-75014 Paris, France.; Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France.; Max Planck Inst Radioastron, D-53121 Bonn, Germany.; Natl Radio Astron Observ, Socorro, NM 87801 USA.; Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London, England.; Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.; Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
Identifiers:ISI:000180637800011 [ID No:1]
ISSN:0004-6361 [ID No:2]
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