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The Herschel-Atlas data release 2 paper II: catalogues of far-infrared and sub-millimetre sources in the fields at the South and North Galactic poles

Maddox, Steve, Valiante, E., Cigan, Phillip, Dunne, Loretta, Eales, Stephen, Smith, Matthew, Dye, S., Furlanetto, C., Ibar, E., Zotti, G. de, Millard, J. S., Bourne, N., Gomez, Haley, Ivison, R. J., Scott, D. and Valtchanov, I. 2018. The Herschel-Atlas data release 2 paper II: catalogues of far-infrared and sub-millimetre sources in the fields at the South and North Galactic poles. Astrophysical Journal 236 (2) , 30. 10.3847/1538-4365/aab8fc

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Abstract

The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) is a survey of 660 deg2 with the PACS and SPIRE cameras in five photometric bands: 100, 160, 250, 350 and 500 µm. This is the second of three papers describing the data release for the large fields at the south and north Galactic poles (NGP and SGP). In this paper we describe the catalogues of far-infrared and submillimetre sources for the NGP and SGP, which cover 177.1 deg2 and 303.4 deg2, respectively. The catalogues contain 118,908 sources for the NGP field and 193,527 sources for the SGP field detected at more than 4σ significance in any of the 250, 350 or 500 µm bands. The source detection is based on the 250 µm map, and we present photometry in all five bands for each source, including aperture photometry for sources known to be extended. The rms positional accuracy for the faintest sources is about 2.4 arc seconds in both right ascension and declination. We present a statistical analysis of the catalogues and discuss the practical issues – completeness, reliability, flux boosting, accuracy of positions, accuracy of flux measurements – necessary to use the catalogues for astronomical projects.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Astronomical Society
ISSN: 0004-637X
Date of First Compliant Deposit: 10 May 2018
Date of Acceptance: 20 March 2018
Last Modified: 06 Jun 2018 07:20
URI: http://orca.cf.ac.uk/id/eprint/111349

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