BLAST: the far-infrared/radio correlation in distant galaxies - Université Paris Cité Accéder directement au contenu
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2010

BLAST: the far-infrared/radio correlation in distant galaxies

Simon Dye
  • Fonction : Auteur
Enzo Pascale
  • Fonction : Auteur
Eva Schinnerer
Fabian Walter
Axel Weiss

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

Dates et versions

hal-03691956 , version 1 (09-06-2022)

Identifiants

Citer

Robert J. Ivison, David M. Alexander, Andy D. Biggs, W. N. Brandt, Edward L. Chapin, et al.. BLAST: the far-infrared/radio correlation in distant galaxies. Monthly Notices of the Royal Astronomical Society, 2010, 402, pp.245-258. ⟨10.1111/j.1365-2966.2009.15918.x⟩. ⟨hal-03691956⟩
14 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More