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GAMA/H-ATLAS: the ultraviolet spectral slope and obscuration in galaxies

Wijesinghe, D. B. ; da Cunha, E. ; Hopkins, A. M. ; Dunne, L. ; Sharp, R. ; Gunawardhana, M. ; Brough, S. ; Sadler, E. M. ; Driver, S. ; Baldry, I. ; Bamford, S. ; Liske, J. ; Loveday, J. ; Norberg, P. ; Peacock, J. ; Popescu, C. C. ; Tuffs, R. ; Andrae, E. ; Auld, R. ; Baes, M. ; Bland-Hawthorn, J. ; Buttiglione, S. ; Cava, A. ; Cameron, E. ; Conselice, C. J. ; Cooray, A. ; Croom, S. ; Dariush, A. ; DeZotti, G. ; Dye, S. ; Eales, S. ; Frenk, C. ; Fritz, J. ; Hill, D. ; Hopwood, R. ; Ibar, E. ; Ivison, R. ; Jarvis, M. ; Jones, D. H. ; van Kampen, E. ; Kelvin, L. ; Kuijken, K. ; Maddox, S. J. ; Madore, B. ; Michałowski, M. J. ; Nichol, B. ; Parkinson, H. ; Pascale, E. ; Pimbblet, K. A. ; Pohlen, M. ; Prescott, M. ; Rhodighiero, G. ; Robotham, A. S. G. ; Rigby, E. E. ; Seibert, M. ; Sergeant, S. ; Smith, D. J. B. ; Temi, P. ; Sutherland, W. ; Taylor, E. ; Thomas, D. ; van der Werf, P.

In: Monthly Notices of the Royal Astronomical Society, 2011, vol. 415, no. 2, p. 1002-1012

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    Titre
    • GAMA/H-ATLAS: the ultraviolet spectral slope and obscuration in galaxies
    Auteur
    • Wijesinghe, D. B.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • da Cunha, E.. Max Planck Institute for Astronomy, Koenigstuhl 17, 69117 Heidelberg, Germany
    • Hopkins, A. M.. Australian Astronomical Observatory, PO Box 296, Epping, NSW 1710, Australia
    • Dunne, L.. School of Physics & Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD
    • Sharp, R.. Research School of Astronomy & Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia
    • Gunawardhana, M.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • Brough, S.. Australian Astronomical Observatory, PO Box 296, Epping, NSW 1710, Australia
    • Sadler, E. M.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • Driver, S.. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
    • Baldry, I.. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD
    • Bamford, S.. Centre for Astronomy and Particle Theory, University of Nottingham, University Park, Nottingham NG7 2RD
    • Liske, J.. European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
    • Loveday, J.. Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH
    • Norberg, P.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Peacock, J.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Popescu, C. C.. Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE
    • Tuffs, R.. Max Planck Institute for Nuclear Physics (MPIK), Saupfercheckweg 1, 69117 Heidelberg, Germany
    • Andrae, E.. Max Planck Institute for Nuclear Physics (MPIK), Saupfercheckweg 1, 69117 Heidelberg, Germany
    • Auld, R.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • Baes, M.. Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
    • Bland-Hawthorn, J.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • Buttiglione, S.. INAF Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, 35122 Padova, Italy
    • Cava, A.. Instituto de Astrofí sica de Canarias, C/Vía Lactea s/n, E-38200 La Laguna, Spain
    • Cameron, E.. Department of Physics, Swiss Federal Institute of Technology (ETH-Zürich), 8093 Zürich, Switzerland
    • Conselice, C. J.. School of Physics & Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD
    • Cooray, A.. Department of Physics & Astronomy, University of California, Irvine, 4186 Frederick Reines Hall, Irvine, CA 92697-4575, USA
    • Croom, S.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • Dariush, A.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • DeZotti, G.. INAF Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, 35122 Padova, Italy
    • Dye, S.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • Eales, S.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • Frenk, C.. Department of Physics, Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE
    • Fritz, J.. Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium
    • Hill, D.. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
    • Hopwood, R.. Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA
    • Ibar, E.. UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh EH9 3HJ
    • Ivison, R.. UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh EH9 3HJ
    • Jarvis, M.. Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB
    • Jones, D. H.. Australian Astronomical Observatory, PO Box 296, Epping, NSW 1710, Australia
    • van Kampen, E.. European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
    • Kelvin, L.. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
    • Kuijken, K.. Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, the Netherlands
    • Maddox, S. J.. School of Physics & Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD
    • Madore, B.. Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
    • Michałowski, M. J.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Nichol, B.. Institute of Cosmology and Gravitation (ICG), University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth PO1 3FX
    • Parkinson, H.. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
    • Pascale, E.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • Pimbblet, K. A.. School of Physics, Monash University, Clayton, VIC 3800, Australia
    • Pohlen, M.. School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA
    • Prescott, M.. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD
    • Rhodighiero, G.. Universitá di Padova, Vicolo dell' Osservatorio 3-35122, Italy
    • Robotham, A. S. G.. School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
    • Rigby, E. E.. School of Physics & Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD
    • Seibert, M.. Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
    • Sergeant, S.. Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA
    • Smith, D. J. B.. School of Physics & Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD
    • Temi, P.. Astrophysics Branch, NASA Ames Research Center, Mail Stop 245-6, Moffett Field, CA 94035, USA
    • Sutherland, W.. Astronomy Unit, Queen Mary University London, Mile End Road, London E1 4NS
    • Taylor, E.. Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia
    • Thomas, D.. UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh EH9 3HJ
    • van der Werf, P.. Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, the Netherlands
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 2011, vol. 415, no. 2, p. 1002-1012. Blackwell Publishing Ltd
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:297378
    Summary
    We use multiwavelength data from the Galaxy And Mass Assembly (GAMA) and Herschel-ATLAS (H-ATLAS) surveys to compare the relationship between various dust obscuration measures in galaxies. We explore the connections between the ultraviolet (UV) spectral slope, β, the Balmer decrement and the far-infrared (FIR) to 150 nm far-ultraviolet (FUV) luminosity ratio. We explore trends with galaxy mass, star formation rate (SFR) and redshift in order to identify possible systematics in these various measures. We reiterate the finding of other authors that there is a large scatter between the Balmer decrement and the β parameter, and that β may be poorly constrained when derived from only two broad passbands in the UV. We also emphasize that FUV-derived SFRs, corrected for dust obscuration using β, will be overestimated unless a modified relation between β and the attenuation factor is used. Even in the optimum case, the resulting SFRs have a significant scatter, well over an order of magnitude. While there is a stronger correlation between the IR-to-FUV luminosity ratio and β parameter than with the Balmer decrement, neither of these correlations are particularly tight, and dust corrections based on β for high-redshift galaxy SFRs must be treated with caution. We conclude with a description of the extent to which the different obscuration measures are consistent with each other as well as the effects of including other galactic properties on these correlations