Dye, Simon, Eales, Stephen Anthony  ORCID: https://orcid.org/0000-0002-7394-426X, Moncelsi, Lorenzo and Pascale, Enzo ORCID: https://orcid.org/0000-0002-3242-8154
2010.
Evolution of the star formation histories of BLAST galaxies.
Monthly Notices of the Royal Astronomical Society: Letters
407
(1)
, L69-L73.
10.1111/j.1745-3933.2010.00907.x
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Abstract
We have measured star formation histories (SFHs) and stellar masses of galaxies detected by the Balloon-borne Large Aperture Submillimetre Telescope (BLAST) over ∼9 deg2 centred on the Chandra Deep Field-South. We have applied the recently developed SFH reconstruction method of Dye et al. to optical, near-infrared and mid-infrared photometry of 92 BLAST galaxies. We find significant differences between the SFHs of low-mass (≲1011 M⊙) and high-mass (≳1011 M⊙) systems. On average, low-mass systems exhibit a dominant late burst of star formation which creates a large fraction of their stellar mass. Conversely, high-mass systems tend to have a significant amount of stellar mass that formed much earlier. We also find that the high-mass SFHs evolve more strongly than the low-mass SFHs. These findings are consistent with the phenomenon of downsizing observed in optically selected samples of galaxies.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Physics and Astronomy |
| Subjects: | Q Science > QB Astronomy |
| Uncontrolled Keywords: | galaxies: evolution; galaxies: star formation; submillimetre: galaxies |
| Additional Information: | Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0035-8711/ (accessed 20/02/2014). |
| Publisher: | Royal Astronomical Society |
| ISSN: | 17453925 |
| Date of First Compliant Deposit: | 30 March 2016 |
| Last Modified: | 17 May 2023 04:17 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/20041 |
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