CaltechAUTHORS
Published March 11, 2008 | Version Accepted Version + Published
Journal Article Open

The SCUBA HAlf Degree Extragalactic Survey – VI. 350-μm mapping of submillimetre galaxies

Creators

  • 1. ROR icon University of British Columbia
  • 2. ROR icon Durham University
  • 3. ROR icon University of Toronto
  • 4. ROR icon University of Edinburgh
  • 5. ROR icon UK Astronomy Technology Centre
  • 6. ROR icon National Radio Astronomy Observatory
  • 7. ROR icon National Institute of Astrophysics, Optics and Electronics
  • 8. ROR icon California Institute of Technology
  • 9. ROR icon Imperial College London
  • 10. ROR icon Cardiff University
  • 11. ROR icon Cornell University
  • 12. ROR icon East Asian Observatory
  • 13. ROR icon Universität Innsbruck
  • 14. ROR icon University of Hertfordshire
  • 15. ROR icon The Open University
  • 16. ROR icon University of Padua

Abstract

A follow-up survey using the Submillimetre High-Angular Resolution Camera (SHARC-II) at 350 μm has been carried out to map the regions around several 850-μm-selected sources from the Submillimetre HAlf Degree Extragalactic Survey (SHADES). These observations probe the infrared (IR) luminosities and hence star formation rates in the largest existing, most robust sample of submillimetre galaxies (SMGs). We measure 350-μm flux densities for 24 850-μm sources, seven of which are detected at ≥2.5σ within a 10 arcsec search radius of the 850-μm positions. When results from the literature are included the total number of 350-μm flux density constraints of SHADES SMGs is 31, with 15 detections. We fit a modified blackbody to the far-IR (FIR) photometry of each SMG, and confirm that typical SMGs are dust-rich (M_(dust) ≃ 9 × 10⁸ M_⊙) , luminous (L_(FIR) ≃ 2 × 10¹² L_⊙) star-forming galaxies with intrinsic dust temperatures of ≃35 K and star formation rates of ≃400 M_⊙ yr⁻¹ . We have measured the temperature distribution of SMGs and find that the underlying distribution is slightly broader than implied by the error bars, and that most SMGs are at 28 K with a few hotter. We also place new constraints on the 350-μm source counts, N350(>25 mJy) ∼ 200–500 deg⁻².

Additional Information

© 2008 The Authors. Journal compilation © 2008 RAS, MNRAS. Accepted 2007 December 4. Received 2007 December 4; in original form 2007 May 21. We thank Darren Dowell and Attila Kovacs at Caltech, who provided support and advice before, during, and after the CSO observing runs and to the CSO crew for support. The CSO is operated by Caltech under a contract from the National Science Foundation (NSF). KC, MH, AP and DS acknowledge support from the Natural Sciences and Engineering Research Council of Canada (NSERC). KC also acknowledges the Particle Physics Association Research Council (PPARC) for support. IS acknowledges support from the Royal Society. IA and DH acknowledge support from CONACyT grants. JW is grateful for support provided by the Max-Planck Society and the Alexander von Humboldt Foundation. EvK acknowledges support from FWF grant P18493.

Attached Files

Published - COPmnras08.pdf

Accepted Version - 0711.0274.pdf

Files

0711.0274.pdf

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Additional details

Identifiers

Eprint ID
14433
Resolver ID
CaltechAUTHORS:20090623-151019384

Related works

Describes
https://arxiv.org/abs/0711.0274 (URL)

Funding

NSF
Natural Sciences and Engineering Research Council of Canada (NSERC)
Particle Physics and Astronomy Research Council (PPARC)
Royal Society
Consejo Nacional de Ciencia y Tecnología (CONACYT)
Max-Planck Society
Fonds Zur Förderung der Wissenschaftlichen Forschung (FWF)
P18493
Alexander von Humboldt Foundation

Dates

Created
2009-08-29
Created from EPrint's datestamp field
Updated
2021-11-08
Created from EPrint's last_modified field