Penner, Kyle and Pope, Alexandra and Chapin, Edward L. and Greve, Thomas R. and Bertoldi, Frank and Brodwin, Mark and Chary, Ranga-Ram and Conselice, Christopher J. and Coppin, Kristen and Giavalisco, Mauro and Hughes, David H. and Ivison, Rob J. and Perera, Thushara and Scott, Douglas and Scott, Kimberly and Wilson, Grant (2011) Origins of the extragalactic background at 1mm from a combined analysis of the AzTEC and MAMBO data in GOODS-N. Monthly Notices of the Royal Astronomical Society, 410 (4). pp. 2749-2759. ISSN 0035-8711 http://resolver.caltech.edu/CaltechAUTHORS:20110301-111030753
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We present a study of the cosmic infrared background, which is a measure of the dust-obscured activity in all galaxies in the Universe. We venture to isolate the galaxies responsible for the background at 1 mm; with spectroscopic and photometric redshifts we constrain the redshift distribution of these galaxies. We create a deep 1.16mm map (σ ~ 0.5 mJy) by combining the AzTEC 1.1 mm and MAMBO 1.2 mm data sets in the Great Observatories Origins Deep Survey North (GOODS-N) region. This combined map contains 41 secure detections, 13 of which are new. By averaging the 1.16 mm flux densities of individually undetected galaxies with 24 μm flux densities >25 μJy, we resolve 31–45 per cent of the 1.16 mm background. Repeating our analysis on the SCUBA 850 μm map, we resolve a higher percentage (40–64 per cent) of the 850 μm background. A majority of the background resolved (attributed to individual galaxies) at both wavelengths comes from galaxies at z > 1.3. If the ratio of the resolved submillimetre to millimetre background is applied to a reasonable scenario for the origins of the unresolved submillimetre background, 60–88 per cent of the total 1.16 mm background comes from galaxies at z > 1.3.
|Additional Information:||© 2010 The Authors. Journal compilation © 2010 RAS. Accepted 2010 September 6. Received 2010 August 6; in original form 2010 April 16. Article first published online: 26 Oct. 2010. We thank the referee for their helpful comments. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. AP acknowledges support provided by NASA through the Spitzer Space Telescope Fellowship Program, through a contract issued by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. The Dark Cosmology Centre is funded by the DNRF. TRG acknowledges support from IDA. Support for MB was provided by the W.M. Keck Foundation. KC acknowledges the UK Science and Technology Facilities Council (STFC) for a fellowship.|
|Subject Keywords:||methods: statistical – galaxies: evolution – galaxies: high-redshift – submillimetre: diffuse background.|
|Official Citation:||Penner, K., Pope, A., Chapin, E. L., Greve, T. R., Bertoldi, F., Brodwin, M., Chary, R.-R., Conselice, C. J., Coppin, K., Giavalisco, M., Hughes, D. H., Ivison, R. J., Perera, T., Scott, D., Scott, K. and Wilson, G. (2011), Origins of the extragalactic background at 1 mm from a combined analysis of the AzTEC and MAMBO data in GOODS-N. Monthly Notices of the Royal Astronomical Society, 410: 2749–2759. doi: 10.1111/j.1365-2966.2010.17650.x|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Benjamin Perez|
|Deposited On:||03 Mar 2011 04:18|
|Last Modified:||03 Mar 2011 04:18|
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