期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 409, 期 1, 页码 L19-L24出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1745-3933.2010.00964.x
关键词
galaxies: evolution; galaxies: high-redshift; galaxies: star formation; infrared: galaxies
资金
- CSA (Canada)
- NAOC (China)
- ASI (Italy)
- MCINN (Spain)
- SNSB (Sweden)
- STFC (UK)
- NASA (USA)
- Spanish MCINN [ESP2007-65812-C02-02]
- CEA (France)
- CNES (France)
- CNRS (France)
- STFC [ST/H001530/1, ST/I506929/1, ST/F007019/1, ST/H00260X/1, ST/G007039/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E001181/1, ST/I506929/1, ST/F007019/1, ST/H00260X/1, ST/G007039/1] Funding Source: researchfish
- UK Space Agency [ST/G003874/1] Funding Source: researchfish
We have analysed the rest-frame far-infrared properties of a sample of massive (M-* > 10(11) M-circle dot) galaxies at 2 less than or similar to z less than or similar to 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-mu m data, as a function of the morphological type, mass and size. We find that 26/45 sources are detected at MIPS 24 mu m and 15/45 (all MIPS 24-mu m detections) are detected at SPIRE 250 mu m, 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 (similar to 50-100 M-circle dot yr(-1)) is substantially (a factor similar to 3) lower than the mean value presented by disc-like galaxies (similar to 250-300 M-circle dot yr(-1)).
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