HerMES: point source catalogues from deep Herschel-SPIRE observations

Smith, A. J.; Wang, L.; Oliver, S. J.; Auld, R.; Bock, J.; Brisbin, D.; Burgarella, D.; Chanial, P.; Chapin, E.; Clements, D. L.; Conversi, L.; Cooray, A.; Dowell, C. D.; Eales, S.; Farrah, D.; Franceschini, A.; Glenn, J.; Griffin, M.; Ivison, R. J.; Mortier, A. M. J.; Page, M. J.; Papageorgiou, A.; Pearson, C. P.; Pérez-Fournon, I.; Pohlen, M.; Rawlings, J. I.; Raymond, G.; Rodighiero, G.; Roseboom, I. G.; Rowan-Robinson, M.; Savage, R.; Scott, Douglas; Seymour, N.; Symeonidis, M.; Tugwell, K. E.; Vaccari, M.; Valtchanov, I.; Vigroux, L.; Ward, R.; Wright, G.; Zemcov, M.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society, Volume 419, Issue 1, pp. 377-389.

Advertised on:
1
2012
Number of authors
41
IAC number of authors
1
Citations
65
Refereed citations
64
Description
We describe the generation of single-band point source catalogues from submillimetre Herschel-SPIRE observations taken as part of the Science Demonstration Phase of the Herschel Multi-tiered Extragalactic Survey (HerMES). Flux densities are found by means of peak finding and the fitting of a Gaussian point-response function. With highly confused images, careful checks must be made on the completeness and flux-density accuracy of the detected sources. This is done by injecting artificial sources into the images and analysing the resulting catalogues. Measured flux densities at which 50 per cent of injected sources result in good detections at (250, 350 and 500) μm range from (11.6, 13.2 and 13.1) to (25.7, 27.1 and 35.8) mJy, depending on the depth of the observation (where a 'good' detection is taken to be one with positional offset less than one full-width half-maximum of the point-response function, and with the measured flux density within a factor of 2 of the flux density of the injected source). This paper acts as a reference for the 2010 July HerMES public data release. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
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This IAC research group carries out several extragalactic projects in different spectral ranges, using space as well as ground-based telescopes, to study the cosmological evolution of galaxies and the origin of nuclear activity in active galaxies. The group is a member of the international consortium which built the SPIRE instrument for the
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