GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters
We compare common star formation rate (SFR) indicators in the local Universe in the Galaxy and Mass Assembly (GAMA) equatorial fields (∼160 deg2), using ultraviolet (UV) photometry from GALEX, far-infrared and sub-millimetre (sub-mm) photometry from Herschel Astrophysical Terahertz Large Area Survey...
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Oxford University Press
2016
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| Online Access: | https://eprints.nottingham.ac.uk/42348/ |
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| author | Wang, L. Norberg, P. Gunawardhana, M.L.P. Heinis, S. Baldry, I.K. Bland-Hawthorn, J. Bourne, N. Brough, S. Brown, M.J.I. Cluver, M.E. Cooray, A. da Cunha, E. Driver, S.P. Dunne, L. Dye, S. Eales, S. Grootes, M.W. Holwerda, B.W. Hopkins, A.M. Ibar, E. Ivison, R. Lacey, C. Lara-Lopez, M.A. Loveday, J. Maddox, S.J. Michałowski, M.J. Oteo, I. Owers, M.S. Popescu, C.C. Smith, D.J.B. Taylor, E.N. Tuffs, R.J. van der Werf, P. |
| author_facet | Wang, L. Norberg, P. Gunawardhana, M.L.P. Heinis, S. Baldry, I.K. Bland-Hawthorn, J. Bourne, N. Brough, S. Brown, M.J.I. Cluver, M.E. Cooray, A. da Cunha, E. Driver, S.P. Dunne, L. Dye, S. Eales, S. Grootes, M.W. Holwerda, B.W. Hopkins, A.M. Ibar, E. Ivison, R. Lacey, C. Lara-Lopez, M.A. Loveday, J. Maddox, S.J. Michałowski, M.J. Oteo, I. Owers, M.S. Popescu, C.C. Smith, D.J.B. Taylor, E.N. Tuffs, R.J. van der Werf, P. |
| author_sort | Wang, L. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We compare common star formation rate (SFR) indicators in the local Universe in the Galaxy and Mass Assembly (GAMA) equatorial fields (∼160 deg2), using ultraviolet (UV) photometry from GALEX, far-infrared and sub-millimetre (sub-mm) photometry from Herschel Astrophysical Terahertz Large Area Survey, and Hα spectroscopy from the GAMA survey. With a high-quality sample of 745 galaxies (median redshift 〈z〉 = 0.08), we consider three SFR tracers: UV luminosity corrected for dust attenuation using the UV spectral slope β (SFRUV, corr), Hα line luminosity corrected for dust using the Balmer decrement (BD) (SFRH α, corr), and the combination of UV and infrared (IR) emission (SFRUV + IR). We demonstrate that SFRUV, corr can be reconciled with the other two tracers after applying attenuation corrections by calibrating Infrared excess (IRX; i.e. the IR to UV luminosity ratio) and attenuation in the Hα (derived from BD) against β. However, β, on its own, is very unlikely to be a reliable attenuation indicator. We find that attenuation correction factors depend on parameters such as stellar mass (M*), z and dust temperature (Tdust), but not on Hα equivalent width or Sérsic index. Due to the large scatter in the IRX versus β correlation, when compared to SFRUV + IR, the β-corrected SFRUV, corr exhibits systematic deviations as a function of IRX, BD and Tdust. |
| first_indexed | 2025-11-14T19:48:27Z |
| format | Article |
| id | nottingham-42348 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:48:27Z |
| publishDate | 2016 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-423482020-05-04T17:55:53Z https://eprints.nottingham.ac.uk/42348/ GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters Wang, L. Norberg, P. Gunawardhana, M.L.P. Heinis, S. Baldry, I.K. Bland-Hawthorn, J. Bourne, N. Brough, S. Brown, M.J.I. Cluver, M.E. Cooray, A. da Cunha, E. Driver, S.P. Dunne, L. Dye, S. Eales, S. Grootes, M.W. Holwerda, B.W. Hopkins, A.M. Ibar, E. Ivison, R. Lacey, C. Lara-Lopez, M.A. Loveday, J. Maddox, S.J. Michałowski, M.J. Oteo, I. Owers, M.S. Popescu, C.C. Smith, D.J.B. Taylor, E.N. Tuffs, R.J. van der Werf, P. We compare common star formation rate (SFR) indicators in the local Universe in the Galaxy and Mass Assembly (GAMA) equatorial fields (∼160 deg2), using ultraviolet (UV) photometry from GALEX, far-infrared and sub-millimetre (sub-mm) photometry from Herschel Astrophysical Terahertz Large Area Survey, and Hα spectroscopy from the GAMA survey. With a high-quality sample of 745 galaxies (median redshift 〈z〉 = 0.08), we consider three SFR tracers: UV luminosity corrected for dust attenuation using the UV spectral slope β (SFRUV, corr), Hα line luminosity corrected for dust using the Balmer decrement (BD) (SFRH α, corr), and the combination of UV and infrared (IR) emission (SFRUV + IR). We demonstrate that SFRUV, corr can be reconciled with the other two tracers after applying attenuation corrections by calibrating Infrared excess (IRX; i.e. the IR to UV luminosity ratio) and attenuation in the Hα (derived from BD) against β. However, β, on its own, is very unlikely to be a reliable attenuation indicator. We find that attenuation correction factors depend on parameters such as stellar mass (M*), z and dust temperature (Tdust), but not on Hα equivalent width or Sérsic index. Due to the large scatter in the IRX versus β correlation, when compared to SFRUV + IR, the β-corrected SFRUV, corr exhibits systematic deviations as a function of IRX, BD and Tdust. Oxford University Press 2016-06-20 Article PeerReviewed Wang, L., Norberg, P., Gunawardhana, M.L.P., Heinis, S., Baldry, I.K., Bland-Hawthorn, J., Bourne, N., Brough, S., Brown, M.J.I., Cluver, M.E., Cooray, A., da Cunha, E., Driver, S.P., Dunne, L., Dye, S., Eales, S., Grootes, M.W., Holwerda, B.W., Hopkins, A.M., Ibar, E., Ivison, R., Lacey, C., Lara-Lopez, M.A., Loveday, J., Maddox, S.J., Michałowski, M.J., Oteo, I., Owers, M.S., Popescu, C.C., Smith, D.J.B., Taylor, E.N., Tuffs, R.J. and van der Werf, P. (2016) GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters. Monthly Notices of the Royal Astronomical Society, 461 (2). pp. 1898-1916. ISSN 1365-2966 methods: statistical galaxies: photometry galaxies: statistics infrared: galaxies ultraviolet: galaxies https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stw1450 doi:10.1093/mnras/stw1450 doi:10.1093/mnras/stw1450 |
| spellingShingle | methods: statistical galaxies: photometry galaxies: statistics infrared: galaxies ultraviolet: galaxies Wang, L. Norberg, P. Gunawardhana, M.L.P. Heinis, S. Baldry, I.K. Bland-Hawthorn, J. Bourne, N. Brough, S. Brown, M.J.I. Cluver, M.E. Cooray, A. da Cunha, E. Driver, S.P. Dunne, L. Dye, S. Eales, S. Grootes, M.W. Holwerda, B.W. Hopkins, A.M. Ibar, E. Ivison, R. Lacey, C. Lara-Lopez, M.A. Loveday, J. Maddox, S.J. Michałowski, M.J. Oteo, I. Owers, M.S. Popescu, C.C. Smith, D.J.B. Taylor, E.N. Tuffs, R.J. van der Werf, P. GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title | GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title_full | GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title_fullStr | GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title_full_unstemmed | GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title_short | GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters |
| title_sort | gama/h-atlas: common star formation rate indicators and their dependence on galaxy physical parameters |
| topic | methods: statistical galaxies: photometry galaxies: statistics infrared: galaxies ultraviolet: galaxies |
| url | https://eprints.nottingham.ac.uk/42348/ https://eprints.nottingham.ac.uk/42348/ https://eprints.nottingham.ac.uk/42348/ |