Herschel-ATLAS: The far-infrared-radio correlation at z < 0.5
Por:
Jarvis M.J., Smith D.J.B., Bonfield D.G., Hardcastle M.J., Falder J.T., Stevens J.A., Ivison R.J., Auld R., Baes M., Baldry I.K., Bamford S.P., Bourne N., Buttiglione S., Cava A., Cooray A., Dariush A., De Zotti G., Dunlop J.S., Dunne L., Dye S., Eales S., Fritz J., Hill D.T., Hopwood R., Hughes D.H., Ibar E., Jones D.H., Kelvin L., Lawrence A., Leeuw L., Loveday J., Maddox S.J., Michalowski M.J., Negrello M., Norberg P., Pohlen M., Prescott M., Rigby E.E., Robotham A., Rodighiero G., Scott D., Sharp R., Temi P., Thompson M.A., Van Der Werf P., Van Kampen E., Vlahakis C., White G.
Publicada:
1 ene 2010
Resumen:
We use data from the Herschel-ATLAS to investigate the evolution of the far-infrared-radio correlation over the redshift range 0 < z < 0.5. Using the total far-infrared luminosity of all >5s sources in the Herschel-ATLAS Science Demonstration Field and cross-matching these data with radio data from the Faint Images of the Radio Sky at Twenty-Centimetres (FIRST) survey and the NRAO Very Large Array (VLA) Northern Sky Survey (NVSS), we obtain 104 radio counterparts to the Herschel sources. With these data we find no evidence for evolution in the far-infrared-radio correlation over the redshift range 0 < z < 0.5, where the median value for the ratio between far-infrared and radio luminosity, qIR, over this range is qIR= 2.40 ± 0.12 (and a mean of qIR= 2.52 ± 0.03 accounting for the lower limits), consistent with both the local value determined from IRAS and values derived from surveys targeting the high-redshift Universe. By comparing the radio fluxes of our sample measured from both FIRST and NVSS we show that previous results suggesting an increase in the value of qIR from high to low redshift may be the result of resolving out extended emission of the low-redshift sources with relatively high-resolution interferometric data, although contamination from active galactic nuclei could still play a significant role.We also find tentative evidence that the longer wavelength cooler dust is heated by an evolved stellar population which does not trace the star formation rate as closely as the shorter wavelength ? 250µm emission or the radio emission, supporting suggestions based on detailed models of individual galaxies. © 2010 The Authors. Journal compilation © 2010 RAS.
Filiaciones:
Jarvis M.J.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Smith D.J.B.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Bonfield D.G.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Hardcastle M.J.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Falder J.T.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Stevens J.A.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Ivison R.J.:
UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom
Auld R.:
School of Physics and Astronomy, Cardiff University, The Parade, Queen Buildings, Cardiff CF24 3AA, United Kingdom
Baes M.:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
Baldry I.K.:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, United Kingdom
Bamford S.P.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Bourne N.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Buttiglione S.:
INAF - Osservatorio Astronomico di Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
Cava A.:
Instituto de Astrofísica de Canarias (IAC), Departamento de Astrofísica de La Laguna (ULL), La Laguna, Tenerife, Spain
Cooray A.:
Department of Physics and Astronomy, University of California, Irvine, CA 92697, United States
Dariush A.:
School of Physics and Astronomy, Cardiff University, The Parade, Queen Buildings, Cardiff CF24 3AA, United Kingdom
De Zotti G.:
INAF - Osservatorio Astronomico di Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
Dunlop J.S.:
SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinbugh EH9 3HJ, United Kingdom
Dunne L.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Dye S.:
School of Physics and Astronomy, Cardiff University, The Parade, Queen Buildings, Cardiff CF24 3AA, United Kingdom
Eales S.:
School of Physics and Astronomy, Cardiff University, The Parade, Queen Buildings, Cardiff CF24 3AA, United Kingdom
Fritz J.:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
Hill D.T.:
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
Hopwood R.:
Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
Hughes D.H.:
INAOE, Aptdo. Postal 51 y, 72000 Puebla, Mexico
Ibar E.:
UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom
Jones D.H.:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
Kelvin L.:
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
Lawrence A.:
SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinbugh EH9 3HJ, United Kingdom
Leeuw L.:
Astrophysics Branch, NASA Ames Research Center, Mail Stop 2456, Moffett Field, CA 94035, United States
Loveday J.:
Astronomy Centre, Department of Physics and Astronomy, School of Maths and Physical Sciences, University of Sussex, Pevensey II Building, Falmer, Brighton BN1 9QH, United Kingdom
Maddox S.J.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Michalowski M.J.:
SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinbugh EH9 3HJ, United Kingdom
Negrello M.:
Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
Norberg P.:
SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinbugh EH9 3HJ, United Kingdom
Pohlen M.:
School of Physics and Astronomy, Cardiff University, The Parade, Queen Buildings, Cardiff CF24 3AA, United Kingdom
Prescott M.:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD, United Kingdom
Rigby E.E.:
Centre for Astronomy and Particle Theory, School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham NG7 1HR, United Kingdom
Robotham A.:
SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
Rodighiero G.:
INAF - Osservatorio Astronomico di Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
Scott D.:
Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T1Z1, Canada
Sharp R.:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
Temi P.:
Astrophysics Branch, NASA Ames Research Center, Mail Stop 2456, Moffett Field, CA 94035, United States
Thompson M.A.:
Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB, United Kingdom
Van Der Werf P.:
Leiden Observatory, Leiden University, PO Box 9513, NL 2300 RA Leiden, Netherlands
Van Kampen E.:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany
Vlahakis C.:
Leiden Observatory, Leiden University, PO Box 9513, NL 2300 RA Leiden, Netherlands
White G.:
Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
The STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0NL, United Kingdom
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