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Herschel-Astrophysical Terahertz Large Area Survey: detection of a far-infrared population around galaxy clusters

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Abstract
We report the detection of a significant excess in the surface density of far-infrared sources from the Herschel-Astrophysical Terahertz Large Area Survey within similar to 1Mpc of the centres of 66 optically selected clusters of galaxies in the Sloan Digital Sky Survey with < z > similar to 0.25. From the analysis of the multiwavelength properties of their counterparts we conclude that the far-infrared emission is associated with dust-obscured star formation and/or active galactic nuclei (AGN) within galaxies in the clusters themselves. The excess reaches a maximum at a radius of similar to 0.8Mpc, where we find 1.0 +/- 0.3 S-250 > 34 mJy sources on average per cluster above what would be expected for random field locations. If the far-infrared emission is dominated by star formation (as opposed to AGN) then this corresponds to an average star formation rate of similar to 7M(circle dot) yr(-1) per cluster in sources with L-IR > 5 x 10(10) L-circle dot. Although lensed sources make a negligible contribution to the excess signal, a fraction of the sources around the clusters could be gravitationally lensed, and we have identified a sample of potential cases of cluster-lensed Herschel sources that could be targeted in follow-up studies.
Keywords
galaxies: clusters: general, galaxies: evolution, gravitational lensing: strong, ABELL 1689, EVOLUTION, ATLAS, ISOCAM SURVEY, BAND LUMINOSITY, DISTANT CLUSTERS, LUMINOSITY FUNCTION, STELLAR MASS FUNCTIONS, OBSCURED STAR-FORMATION, DIGITAL SKY SURVEY, submillimetre: galaxies, galaxies: starburst

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MLA
Coppin, KEK, et al. “Herschel-Astrophysical Terahertz Large Area Survey: Detection of a Far-Infrared Population around Galaxy Clusters.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 416, no. 1, 2011, pp. 680–88, doi:10.1111/j.1365-2966.2011.19084.x.
APA
Coppin, K., Geach, J., Smail, I., Dunne, L., Edge, A., Ivison, R., … van der Werf, P. (2011). Herschel-Astrophysical Terahertz Large Area Survey: detection of a far-infrared population around galaxy clusters. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 416(1), 680–688. https://doi.org/10.1111/j.1365-2966.2011.19084.x
Chicago author-date
Coppin, KEK, JE Geach, I Smail, L Dunne, AC Edge, RJ Ivison, S Maddox, et al. 2011. “Herschel-Astrophysical Terahertz Large Area Survey: Detection of a Far-Infrared Population around Galaxy Clusters.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 416 (1): 680–88. https://doi.org/10.1111/j.1365-2966.2011.19084.x.
Chicago author-date (all authors)
Coppin, KEK, JE Geach, I Smail, L Dunne, AC Edge, RJ Ivison, S Maddox, R Auld, Maarten Baes, S Buttiglione, A Cava, DL Clements, A Cooray, A Dariush, G De Zotti, S Dye, S Eales, Jacopo Fritz, R Hopwood, E Ibar, M Jarvis, MJ Michalowski, DNA Murphy, M Negrello, E Pascale, M Pohlen, E Rigby, G Rodighiero, D Scott, S Serjeant, DJB Smith, P Temi, and P van der Werf. 2011. “Herschel-Astrophysical Terahertz Large Area Survey: Detection of a Far-Infrared Population around Galaxy Clusters.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 416 (1): 680–688. doi:10.1111/j.1365-2966.2011.19084.x.
Vancouver
1.
Coppin K, Geach J, Smail I, Dunne L, Edge A, Ivison R, et al. Herschel-Astrophysical Terahertz Large Area Survey: detection of a far-infrared population around galaxy clusters. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2011;416(1):680–8.
IEEE
[1]
K. Coppin et al., “Herschel-Astrophysical Terahertz Large Area Survey: detection of a far-infrared population around galaxy clusters,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 416, no. 1, pp. 680–688, 2011.
@article{2113958,
  abstract     = {{We report the detection of a significant excess in the surface density of far-infrared sources from the Herschel-Astrophysical Terahertz Large Area Survey within similar to 1Mpc of the centres of 66 optically selected clusters of galaxies in the Sloan Digital Sky Survey with < z > similar to 0.25. From the analysis of the multiwavelength properties of their counterparts we conclude that the far-infrared emission is associated with dust-obscured star formation and/or active galactic nuclei (AGN) within galaxies in the clusters themselves. The excess reaches a maximum at a radius of similar to 0.8Mpc, where we find 1.0 +/- 0.3 S-250 > 34 mJy sources on average per cluster above what would be expected for random field locations. If the far-infrared emission is dominated by star formation (as opposed to AGN) then this corresponds to an average star formation rate of similar to 7M(circle dot) yr(-1) per cluster in sources with L-IR > 5 x 10(10) L-circle dot. Although lensed sources make a negligible contribution to the excess signal, a fraction of the sources around the clusters could be gravitationally lensed, and we have identified a sample of potential cases of cluster-lensed Herschel sources that could be targeted in follow-up studies.}},
  author       = {{Coppin, KEK and Geach, JE and Smail, I and Dunne, L and Edge, AC and Ivison, RJ and Maddox, S and Auld, R and Baes, Maarten and Buttiglione, S and Cava, A and Clements, DL and Cooray, A and Dariush, A and De Zotti, G and Dye, S and Eales, S and Fritz, Jacopo and Hopwood, R and Ibar, E and Jarvis, M and Michalowski, MJ and Murphy, DNA and Negrello, M and Pascale, E and Pohlen, M and Rigby, E and Rodighiero, G and Scott, D and Serjeant, S and Smith, DJB and Temi, P and van der Werf, P}},
  issn         = {{0035-8711}},
  journal      = {{MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY}},
  keywords     = {{galaxies: clusters: general,galaxies: evolution,gravitational lensing: strong,ABELL 1689,EVOLUTION,ATLAS,ISOCAM SURVEY,BAND LUMINOSITY,DISTANT CLUSTERS,LUMINOSITY FUNCTION,STELLAR MASS FUNCTIONS,OBSCURED STAR-FORMATION,DIGITAL SKY SURVEY,submillimetre: galaxies,galaxies: starburst}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{680--688}},
  title        = {{Herschel-Astrophysical Terahertz Large Area Survey: detection of a far-infrared population around galaxy clusters}},
  url          = {{http://doi.org/10.1111/j.1365-2966.2011.19084.x}},
  volume       = {{416}},
  year         = {{2011}},
}

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