H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments
The Herschel Space Observatory has had a tremendous impact on the study of extragalactic dust. Specifically, early-type galaxies (ETG) have been the focus of several studies. In this paper, we combine results from two Herschel studies – a Virgo cluster study Herschel Virgo Cluster Survey (HeViCS) an...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
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Oxford University Press
2015
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| Online Access: | https://eprints.nottingham.ac.uk/42355/ |
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| author | Agius, N.K. di Serego Alighieri, S. Viaene, S. Baes, M. Sansom, A.E. Bourne, N. Bland-Hawthorn, J. Brough, S. Davis, T.A. De Looze, I. Driver, S.P. Dunne, L. Dye, S. Eales, S.A. Hughes, T.M. Ivison, R.J. Kelvin, L.S. Maddox, S. Mahajan, S. Pappalardo, C. Robotham, A.S.G. Rowlands, K. Temi, P. Valiante, E. |
| author_facet | Agius, N.K. di Serego Alighieri, S. Viaene, S. Baes, M. Sansom, A.E. Bourne, N. Bland-Hawthorn, J. Brough, S. Davis, T.A. De Looze, I. Driver, S.P. Dunne, L. Dye, S. Eales, S.A. Hughes, T.M. Ivison, R.J. Kelvin, L.S. Maddox, S. Mahajan, S. Pappalardo, C. Robotham, A.S.G. Rowlands, K. Temi, P. Valiante, E. |
| author_sort | Agius, N.K. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The Herschel Space Observatory has had a tremendous impact on the study of extragalactic dust. Specifically, early-type galaxies (ETG) have been the focus of several studies. In this paper, we combine results from two Herschel studies – a Virgo cluster study Herschel Virgo Cluster Survey (HeViCS) and a broader, low-redshift Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS)/Galaxy and Mass Assembly (GAMA) study – and contrast the dust and associated properties for similar mass galaxies. This comparison is motivated by differences in results exhibited between multiple Herschel studies of ETG. A comparison between consistent modified blackbody derived dust mass is carried out, revealing strong differences between the two samples in both dust mass and dust-to-stellar mass ratio. In particular, the HeViCS sample lacks massive ETG with as high a specific dust content as found in H-ATLAS. This is most likely connected with the difference in environment for the two samples. We calculate nearest neighbour environment densities in a consistent way, showing that H-ATLAS ETG occupy sparser regions of the local Universe, whereas HeViCS ETG occupy dense regions. This is also true for ETG that are not Herschel-detected but are in the Virgo and GAMA parent samples. Spectral energy distributions are fit to the panchromatic data. From these, we find that in H-ATLAS the specific star formation rate anticorrelates with stellar mass and reaches values as high as in our Galaxy. On the other hand HeViCS ETG appear to have little star formation. Based on the trends found here, H-ATLAS ETG are thought to have more extended star formation histories and a younger stellar population than HeViCS ETG. |
| first_indexed | 2025-11-14T19:48:29Z |
| format | Article |
| id | nottingham-42355 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:48:29Z |
| publishDate | 2015 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-423552020-05-04T17:09:48Z https://eprints.nottingham.ac.uk/42355/ H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments Agius, N.K. di Serego Alighieri, S. Viaene, S. Baes, M. Sansom, A.E. Bourne, N. Bland-Hawthorn, J. Brough, S. Davis, T.A. De Looze, I. Driver, S.P. Dunne, L. Dye, S. Eales, S.A. Hughes, T.M. Ivison, R.J. Kelvin, L.S. Maddox, S. Mahajan, S. Pappalardo, C. Robotham, A.S.G. Rowlands, K. Temi, P. Valiante, E. The Herschel Space Observatory has had a tremendous impact on the study of extragalactic dust. Specifically, early-type galaxies (ETG) have been the focus of several studies. In this paper, we combine results from two Herschel studies – a Virgo cluster study Herschel Virgo Cluster Survey (HeViCS) and a broader, low-redshift Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS)/Galaxy and Mass Assembly (GAMA) study – and contrast the dust and associated properties for similar mass galaxies. This comparison is motivated by differences in results exhibited between multiple Herschel studies of ETG. A comparison between consistent modified blackbody derived dust mass is carried out, revealing strong differences between the two samples in both dust mass and dust-to-stellar mass ratio. In particular, the HeViCS sample lacks massive ETG with as high a specific dust content as found in H-ATLAS. This is most likely connected with the difference in environment for the two samples. We calculate nearest neighbour environment densities in a consistent way, showing that H-ATLAS ETG occupy sparser regions of the local Universe, whereas HeViCS ETG occupy dense regions. This is also true for ETG that are not Herschel-detected but are in the Virgo and GAMA parent samples. Spectral energy distributions are fit to the panchromatic data. From these, we find that in H-ATLAS the specific star formation rate anticorrelates with stellar mass and reaches values as high as in our Galaxy. On the other hand HeViCS ETG appear to have little star formation. Based on the trends found here, H-ATLAS ETG are thought to have more extended star formation histories and a younger stellar population than HeViCS ETG. Oxford University Press 2015-06-29 Article PeerReviewed Agius, N.K., di Serego Alighieri, S., Viaene, S., Baes, M., Sansom, A.E., Bourne, N., Bland-Hawthorn, J., Brough, S., Davis, T.A., De Looze, I., Driver, S.P., Dunne, L., Dye, S., Eales, S.A., Hughes, T.M., Ivison, R.J., Kelvin, L.S., Maddox, S., Mahajan, S., Pappalardo, C., Robotham, A.S.G., Rowlands, K., Temi, P. and Valiante, E. (2015) H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments. Monthly Notices of the Royal Astronomical Society, 451 (4). pp. 3815-3835. ISSN 1365-2966 methods: statistical galaxies: elliptical and lenticular cD galaxies: evolution submillimetre: galaxies https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv1191 doi:10.1093/mnras/stv1191 doi:10.1093/mnras/stv1191 |
| spellingShingle | methods: statistical galaxies: elliptical and lenticular cD galaxies: evolution submillimetre: galaxies Agius, N.K. di Serego Alighieri, S. Viaene, S. Baes, M. Sansom, A.E. Bourne, N. Bland-Hawthorn, J. Brough, S. Davis, T.A. De Looze, I. Driver, S.P. Dunne, L. Dye, S. Eales, S.A. Hughes, T.M. Ivison, R.J. Kelvin, L.S. Maddox, S. Mahajan, S. Pappalardo, C. Robotham, A.S.G. Rowlands, K. Temi, P. Valiante, E. H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title | H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title_full | H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title_fullStr | H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title_full_unstemmed | H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title_short | H-ATLAS/GAMA and HeViCS – dusty early-type galaxies in different environments |
| title_sort | h-atlas/gama and hevics – dusty early-type galaxies in different environments |
| topic | methods: statistical galaxies: elliptical and lenticular cD galaxies: evolution submillimetre: galaxies |
| url | https://eprints.nottingham.ac.uk/42355/ https://eprints.nottingham.ac.uk/42355/ https://eprints.nottingham.ac.uk/42355/ |