BLAST: the far-infrared/radio correlation in distant galaxies
Robert J. Ivison
(1, 2)
,
David M. Alexander
(3)
,
Andy D. Biggs
(4)
,
W. N. Brandt
(5)
,
Edward L. Chapin
(6)
,
Kristen E. K. Coppin
(3)
,
Mark J. Devlin
(7)
,
Mark Dickinson
(8)
,
James S. Dunlop
(2)
,
Simon Dye
(9)
,
Stephen A. Eales
(9)
,
David T. Frayer
(10)
,
Mark Halpern
(6)
,
David H. Hughes
(11)
,
Edo Ibar
(1)
,
A. Kovács
(12)
,
Gaelen Marsden
(6)
,
Lorenzo Moncelsi
(9)
,
Calvin B. Netterfield
(13, 14)
,
Enzo Pascale
(9)
,
Guillaume Patanchon
(15)
,
David Rafferty
(5)
,
Marie Rex
(7)
,
Eva Schinnerer
(16)
,
Douglas Scott
(6)
,
Christopher Semisch
(7)
,
Ian Smail
(3)
,
A. M. Swinbank
(3)
,
Matthew D. P. Truch
(7)
,
Gregory S. Tucker
(17)
,
Marco P. Viero
(14)
,
Fabian Walter
(16)
,
Axel Weiss
(12)
,
Donald V. Wiebe
(6, 14)
,
Y. Q. Xue
(5)
1
UKATC -
UK Astronomy Technology Centre, Royal Observatory Edinburgh
2 Edin. - University of Edinburgh
3 ICC - Institute for Computational Cosmology, Department of Physics, Durham University, Durham
4 ESO - European Southern Observatory
5 Pennsylvania State University, Department of Astronomy & Astrophysics
6 University of British Columbia [Vancouver]
7 Department of Physics and Astronomy, University of Pennsylvania
8 NOAO - National Optical Astronomy Observatory, Tucson
9 Cardiff University
10 SSC - Spitzer Science Center, California Institute of Technology
11 INAOE - Instituto Nacional de Astrofísica Óptica y Electrónica
12 MPIfR - Max-Planck-Institut für Radioastronomie
13 Department of Astronomy and Astrophysics, University of Toronto
14 Department of Physics, University of Toronto
15 APC (UMR_7164) - AstroParticule et Cosmologie
16 MPIA - Max-Planck-Institut für Astronomie
17 Department of Physics, Brown University
2 Edin. - University of Edinburgh
3 ICC - Institute for Computational Cosmology, Department of Physics, Durham University, Durham
4 ESO - European Southern Observatory
5 Pennsylvania State University, Department of Astronomy & Astrophysics
6 University of British Columbia [Vancouver]
7 Department of Physics and Astronomy, University of Pennsylvania
8 NOAO - National Optical Astronomy Observatory, Tucson
9 Cardiff University
10 SSC - Spitzer Science Center, California Institute of Technology
11 INAOE - Instituto Nacional de Astrofísica Óptica y Electrónica
12 MPIfR - Max-Planck-Institut für Radioastronomie
13 Department of Astronomy and Astrophysics, University of Toronto
14 Department of Physics, University of Toronto
15 APC (UMR_7164) - AstroParticule et Cosmologie
16 MPIA - Max-Planck-Institut für Astronomie
17 Department of Physics, Brown University
Mark Dickinson
- Fonction : Auteur
- PersonId : 766451
- ORCID : 0000-0001-5414-5131
Eva Schinnerer
- Fonction : Auteur
- PersonId : 756650
- ORCID : 0000-0002-3933-7677
Douglas Scott
- Fonction : Auteur
- PersonId : 755592
- ORCID : 0000-0002-6878-9840
Ian Smail
- Fonction : Auteur
- PersonId : 755987
- ORCID : 0000-0003-3037-257X
Fabian Walter
- Fonction : Auteur
- PersonId : 755412
- ORCID : 0000-0003-4793-7880
Axel Weiss
- Fonction : Auteur
- PersonId : 769760
- ORCID : 0000-0003-4678-3939
Résumé
We investigate the correlation between far-infrared (FIR) and radio luminosities in distant galaxies, a lynchpin of modern astronomy. We use data from the Balloon-borne Large Aperture Submillimetre Telescope (BLAST), Spitzer, the Large Apex BOlometer CamerA (LABOCA), the Very Large Array and the Giant Metre-wave Radio Telescope (GMRT) in the Extended Chandra Deep Field South (ECDFS). For a catalogue of BLAST 250-mum-selected galaxies, we remeasure the 70-870-mum flux densities at the positions of their most likely 24-mum counterparts, which have a median [interquartile] redshift of 0.74 [0.25, 1.57]. From these, we determine the monochromatic flux density ratio, q250(= log10 [S250mum/S1400MHz]), and the bolometric equivalent, qIR. At z ~ 0.6, where our 250-mum filter probes rest-frame 160-mum emission, we find no evolution relative to q160 for local galaxies. We also stack the FIR and submm images at the positions of 24-mum- and radio-selected galaxies. The difference between qIR seen for 250-mum- and radio-selected galaxies suggests that star formation provides most of the IR luminosity in