The far-infrared–radio relationship at high and low redshift |
| |
| Authors: | Catherine Vlahakis Stephen Eales Loretta Dunne |
| |
| Institution: | Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany;School of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff CF24 3AA;School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD |
| |
| Abstract: | We use the results of the SCUBA Local Universe Galaxy Survey, a submillimetre (submm) survey of galaxies in the nearby Universe, to investigate the relationship between the far-infrared (FIR)–submm and radio emission of galaxies at both low and high redshift. At low redshift we show that the correlation between radio and FIR emission is much stronger than the correlation between radio and submm emission, which is evidence that massive stars are the source of both the FIR and radio emission. At high redshift we show that the submm sources detected by SCUBA are brighter sources of radio emission than are predicted from the properties of galaxies in the local Universe. We discuss possible reasons for the cosmic evolution of the relationship between radio and FIR emission. |
| |
| Keywords: | surveys galaxies: distances and redshifts galaxies: ISM radio continuum: galaxies |
|
|
