The VLA-COSMOS Survey. IV. Deep Data and Joint Catalog

Details The VLA-COSMOS Survey. IV. Deep Data and Joint Catalog The VLA-COSMOS Survey. IV. Deep Data and Joint Catalog

2010-05-10

arxiv.org/abs/1005.1641v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

34 pages, 20 figures (3 at reduced resolution). Accepted for publication in ApJS.

Scientific paper

In the context of the VLA-COSMOS Deep project additional VLA A array observations at 1.4 GHz were obtained for the central degree of the COSMOS field and combined with the existing data from the VLA-COSMOS Large project. A newly constructed Deep mosaic with a resolution of 2.5" was used to search for sources down to 4 sigma with 1 sigma ~ 12 microJy/beam in the central 50'x50'. This new catalog is combined with the catalog from the Large project (obtained at 1.5"x1.4" resolution) to construct a new Joint catalog. All sources listed in the new Joint catalog have peak flux densities of >5 sigma at 1.5" and/or 2.5" resolution to account for the fact that a significant fraction of sources at these low flux levels are expected to be slighty resolved at 1.5" resolution. All properties listed in the Joint catalog such as peak flux density, integrated flux density and source size are determined in the 2.5" resolution Deep image. In addition, the Joint catalog contains 43 newly identified multi-component sources.

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