Cava, A., Rodighiero, G., Pérez-Fournon, I., Buitrago, F., Trujillo, I., Altieri, B., Amblard, A., Auld, Robbie Richard, Bock, J., Brisbin, D., Burgarella, D., Castro-Rodríguez, N., Chanial, P., Cirasuolo, M., Clements, D. L., Conselice, C. J., Cooray, A., Eales, Stephen Anthony ![]() ![]() |
Abstract
We have analysed the rest-frame far-infrared properties of a sample of massive (M★ > 1011 M⊙) galaxies at 2 ≲z≲ 3 in the Great Observatories Origins Deep Survey-North (GOODS-N) field using the Spectral and Photometric Imaging Receiver (SPIRE) instrument aboard the Herschel Space Observatory. To conduct this analysis we take advantage of the data from the Herschel Multi-tiered Extragalactic Survey (HerMES) key programme. The sample comprises 45 massive galaxies with structural parameters characterized with HST NICMOS-3. We study detections at submm Herschel bands, together with Spitzer 24-μm data, as a function of the morphological type, mass and size. We find that 26/45 sources are detected at MIPS 24 μm and 15/45 (all MIPS 24-μm detections) are detected at SPIRE 250 μm, with disc-like galaxies more easily detected. We derive star formation rates (SFRs) and specific star formation rates (sSFRs) by fitting the spectral energy distribution of our sources, taking into account non-detections for SPIRE and systematic effects for MIPS derived quantities. We find that the mean SFR for the spheroidal galaxies (∼50–100 M⊙ yr−1) is substantially (a factor ∼3) lower than the mean value presented by disc-like galaxies (∼250–300 M⊙ yr−1).
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Uncontrolled Keywords: | galaxies: evolution; galaxies: high-redshift; galaxies: star formation; infrared: galaxies |
Publisher: | Wiley |
ISSN: | 1745-3925 |
Last Modified: | 18 Oct 2022 12:42 |
URI: | https://orca.cardiff.ac.uk/id/eprint/10973 |
Citation Data
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