THE VLA-COSMOS SURVEY. IV. DEEP DATA AND JOINT CATALOG

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 approximate to 12 mu Jy beam(-1) in the central 50' x 50'. This new catalog is combined with the catalog from the Large project (obtained at 1.'' 5 x 1.'' 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 slightly 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.