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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, 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, Elbaz, D., Ferrero, P., Franceschini, A., Glenn, J., González Solares, E. A., Griffin, Matthew Joseph, Ibar, E., Ivison, R. J., Marchetti, L., Morrison, G. E., Mortier, A. M. J., Oliver, S. J., Page, M. J., Papageorgiou, Andreas, Pearson, C. P., Pohlen, Michael, Rawlings, J. I., Raymond, Gwenifer, 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. and Wright, G. 2010. HerMES: SPIRE detection of high-redshift massive compact galaxies in GOODS-N field. Monthly Notices of the Royal Astronomical Society: Letters 409 (1) , L19-L24. 10.1111/j.1745-3933.2010.00964.x

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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
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: 04 Jun 2017 02:13

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