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

Cava, A.; Rodighiero, G.; Pérez-Fournon, I.; Buitrago, F.; Trujillo, I.; Altieri, B.; Amblard, A.; Auld, R.; Bock, J.; Brisbin, D.; Burgarella, D.; Castro-Rodríguez, N.; Chanial, P.; Cirasuolo, M.; Clements, D. L.; Conselice, C. J.; Cooray, A.; Eales, S.; Elbaz, D.; Ferrero, P.; Franceschini, A.; Glenn, J.; Solares, E. A. González; Griffin, M.; Ibar, E.; Ivison, R. J.; Marchetti, L.; Morrison, G. E.; Mortier, A. M. J.; Oliver, S. J.; Page, M. J.; Papageorgiou, A.; Pearson, C. P.; Pohlen, M.; Rawlings, J. I.; Raymond, G.; Rigopoulou, D.; Roseboom, I. G.; Rowan-Robinson, M.; Scott, D.; Seymour, N.; Smith, A. J.; Symeonidis, M.; Tugwell, K. E.; Vaccari, M.; Valtchanov, I.; Vieira, J. D.; Vigroux, L.; Wang, L.; Wright, G.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society: Letters, Volume 409, Issue 1, pp. L19-L24.

Advertised on:
11
2010
Number of authors
50
IAC number of authors
5
Citations
15
Refereed citations
14
Description
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-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 (~50-100Msolaryr-1) is substantially (a factor ~3) lower than the mean value presented by disc-like galaxies (~250-300Msolaryr-1).
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