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

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-Rodríguez, P. Chanial, M. Cirasuolo, D. L. Clements, C. J. Conselice, A. Cooray, S. Eales, D. Elbaz, P. FerreroA. Franceschini, J. Glenn, E. G. González Solares, M. Griffin, E. Ibar, R. J. Ivison, L. Marchetti, G. E. Morrison, A. M.J. Mortier, S. J. Oliver, M. J. Page, A. Papageorgiou, C. P. Pearson, M. Pohlen, J. I. Rawlings, G. Raymond, D. Rigopoulou, I. G. Roseboom, M. Rowan-Robinson, D. Scott, N. Seymour, A. J. Smith, M. Symeonidis, K. E. Tugwell, M. Vaccari, I. Valtchanov, J. D. Vieira, L. Vigroux, L. Wang, G. Wright

Research output: Contribution to journalLetterpeer-review

Abstract

Wehave analysed the rest-frame far-infrared properties ofa 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 μ 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 (~50-100M yr-1) is substantially (a factor ~3) lower than the mean value presented by disc-like galaxies (~250-300M yr-1).

Original languageEnglish (US)
Pages (from-to)L19-L24
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume409
Issue number1
DOIs
StatePublished - Nov 2010

Keywords

  • Galaxies: evolution
  • Galaxies: high-redshift
  • Galaxies: star formation
  • Infrared: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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