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Submillimeter galax...
Submillimeter galaxies behind the Bullet cluster (1E 0657-56)
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- Johansson, Daniel, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Horellou, Cathy, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Sommer, M. W. (författare)
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- Basu, K. (författare)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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Bertoldi, F. (författare)
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- Birkinshaw, M. (författare)
- University of Bristol
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- Lancaster, K. (författare)
- University of Bristol
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- Lopez-Cruz, O. (författare)
- Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)
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- Quintana, H. (författare)
- Pontificia Universidad Catolica de Chile
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Chalmers tekniska högskola Max Planck Gesellschaft zur Förderung der Wissenschaften eV. (MPG) (creator_code:org_t)
- 2010-05-26
- 2010
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 514:12
- Relaterad länk:
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https://www.aanda.or...
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Abstract
Ämnesord
Stäng
- Context. Clusters of galaxies are effective gravitational lenses able to magnify background galaxies and making it possible to probe the fainter part of the galaxy population. Submillimeter galaxies, which are believed to be star-forming galaxies at typical redshifts of 2 to 3, are a major contaminant to the extended Sunyaev-Zeldovich (SZ) signal of galaxy clusters. For a proper quantification of the SZ signal the contribution of submillimeter galaxies needs to be quantified. Aims. The aims of this study are to identify submillimeter sources in the field of the Bullet cluster (1E 0657-56), a massive cluster of galaxies at z similar or equal to 0.3, measure their flux densities at 870 mu m, and search for counterparts at other wavelengths to constrain their properties. Methods. We carried out deep observations of the submillimeter continuum emission at 870 mu m using the Large APEX BOlometer CAmera (LABOCA) on the Atacama Pathfinder EXperiment (APEX) telescope. Several numerical techniques were used to quantify the noise properties of the data and extract sources. Results. In total, seventeen sources were found. Thirteen of them lie in the central 10 arcmin of the map, which has a pixel sensitivity of 1.2 mJy per 22 '' beam. After correction for flux boosting and gravitational lensing, the number counts are consistent with published submm measurements. Nine of the sources have infrared counterparts in Spitzer maps. The strongest submm detection coincides with a source previously reported at other wavelengths, at an estimated redshift z similar or equal to 2.7. If the submm flux arises from two images of a galaxy magnified by a total factor of 75, as models have suggested, its intrinsic flux would be around 0.6 mJy, consistent with an intrinsic luminosity below 10(12) L-circle dot.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- millimetre/submillimetre waveband
- source extraction
- scuba super-map
- hubble-deep-field
- cosmology
- number counts
- submillimeter: galaxies
- survey
- imaging survey
- degree extragalactic
- galaxies: individual: MMJ065837-5557.0
- 1E 0657-56
- spitzer-space-telescope
- infrared galaxies
- background experiment search
- galaxies: clusters: individual
- infrared galaxy
- observations
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Till lärosätets databas
- Av författaren/redakt...
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Johansson, Danie ...
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Horellou, Cathy, ...
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Sommer, M. W.
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Basu, K.
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Bertoldi, F.
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Birkinshaw, M.
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Lancaster, K.
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Lopez-Cruz, O.
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Quintana, H.
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