Maddox, Steve ![]() ![]() ![]() ![]() |
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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 |
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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: | 04 Dec 2023 19:37 |
URI: | https://orca.cardiff.ac.uk/id/eprint/111349 |
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