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HerMES: SPIRE detection of high-redshift massive compact galaxies in GOODS-N field

HerMES: SPIRE detection of high-redshift massive compact galaxies in GOODS-N field,10.1111/j.1745-3933.2010.00964.x,Monthly Notices of The Royal Astro

HerMES: SPIRE detection of high-redshift massive compact galaxies in GOODS-N field  
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A. Cava, G. Rodighiero, I. Pérez-Fournon, F. Buitrago, I. Trujillo, B. Altieri, A. Amblard, R. Auld, J. Bock, D. Brisbin, D. Burgarella, N. Castro-Rodríguezhttp://academic.research.microsoft.com/io.ashx?type=5&id=27635250&selfId1=0&selfId2=0&maxNumber=12&query=
We have analysed the rest-frame far-infrared properties of a sample of massive (M* > 1011Msolar) 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-mum data, as a function of the morphological type, mass and size. We find that 26/45 sources are detected at MIPS 24 mum and 15/45 (all MIPS 24-mum detections) are detected at SPIRE 250 mum, 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 (~50-100Msolaryr-1) is substantially (a factor ~3) lower than the mean value presented by disc-like galaxies (~250-300Msolaryr-1).
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