News
Release of the Herschel/SPIRE Point Source Catalogue
Posted by h schelp on 08 February 2017 08:55 AM

Dear Herschel colleagues,

We are pleased to announce the public release of the SPIRE Point Source Catalogue (SPSC), containing more than 1.6 million entries spread between the three SPIRE bands.

The distribution of the detected sources in the sky and other top-level information about this catalogue can be found on the SPSC web page at:

https://www.cosmos.esa.int/web/herschel/spire-point-source-catalogue

The catalogue consists of three tables, one for each SPIRE photometric band, provided as zipped coma-separated-value format files, that you can download with just one click using the links below: 

For your convenience, you can also perform queries around a particular position in the sky using the Catalog Search Tool for Herschel data available from NASA's Infrared Science Archive (IRSA).

SPIRE mapped about 9% of the sky in submillimeter broad-band filters centered at wavelengths of 250, 350, and 500 microns (1199, 857, and 600 GHz, respectively), with spatial resolutions of 17.9", 24.2" and 35.4”, respectively. The SPSC was extracted from a total of 6878 Herschel observations, consisting of a serendipitous mix of program science observations with sky coverage to varying depths and calibration observations performed in standard configurations.

The photometry was obtained by a systematic and homogeneous source extraction procedure, followed by a rigorous quality check that emphasized reliability over completeness. Regions affected by strong Galactic emission, mostly in the Galactic Plane, were excluded, as they pushed the limits of the four source extraction methods that were used. Aimed primarily at point sources, the SPSC also contains a significant number of slightly extended sources. Due to the relatively large spatial extent of the SPIRE beams, a number of point or extended sources in the SPSC can actually be composites of multiple sources seen at shorter wavelengths. Users are encouraged to trace back catalog entries to the originally contributing detections in SPIRE observations via the cross identification table available for download, which provides links between the individual catalogue entries (SPSCIDs) and the relevant observation identifiers (OBSIDs) in the Herschel Science Archive.

For further details on the SPSC construction, detailed content, guidelines, and validation, please see the SPIRE Point Source Catalogue Explanatory Supplement. Users should pay particular attention to the Cautionary Notes in this document before using the contents of the SPSC for their research.

Kind regards,

The Herschel Science Centre Helpdesk
https://www.cosmos.esa.int/web/herschel/helpdesk


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