VLA-COSMOS 3 GHz Large project (Smolcic et al. 2016) ---------- contacts: ---------- Vernesa Smolcic: vs@phy.hr Mladen Novak: mlnovak@phy.hr ------------------- Basic data info ------------------- Catalog date: 21-Mar-2016 Source extractor: BLOBCAT v1.2 (http://blobcat.sourceforge.net/) Observations: 384 hours with the VLA, S-band (2-4 GHz), A+C array, 192 pointings Imaging software: CASA v4.2.2 (https://casa.nrao.edu/) Imaging algorithm: Multi-scale multi-frequency synthesis on single pointings Mosaic size: 30000x30000 pixels (3.3 GB) Pixel size: 0.2x0.2 arcsec2 Median rms noise in the COSMOS 2 sq.deg.: 2.3 uJy/beam Beam is circular, resolution: 0.75 arcsec Bandwidth-smearing peak correction: 0% (no corrections applied) Resolved criteria: S_int/S_peak > 1+6*snr^(-1.44) Total area covered: 2.6 sq.deg. ------------------- Final mosaic ------------------- vla_3ghz_msmf.fits -- Final mosaic (Stokes I map, monochromatic flux at 3 GHz), units in [Jy/beam] ---------------------------------- Noise map of the final mosaic ---------------------------------- vla_3ghz_msmf.rms.fits -- Noise map of the final mosaic, units in [Jy/beam] ------------------------------- 3GHz radio source catalog ------------------------------- vla3_cosmos_sources_160321_public5sig.fits -- binary fits file vla3_cosmos_sources_160321_public5sig.tbl -- table -- The catalog contains sources selected down to a 5 sigma (sigma~2.3 uJy/beam) threshold. This catalog can be used for statistical analyses, accompanied with the corrections given in the data & catalog release paper (Smolcic et al. 2016). All completeness & bias corrections and source counts presented in Smolcic et al. (2016) were calculated using this sample. The total fraction of spurious sources in the COSMOS 2 sq.deg. is below 2.7% within this catalog. However, an increase of spurious sources (up to 24% at 5.0= 5.5 (see Sec. 5.2., Fig. 16 and Tab 3 in the data & catalog release paper). The total fraction of spurious sources in the COSMOS 2 sq.deg. within such a selected sample is below 0.4%, and the fraction of spurious sources is below 3% even at the lowest SNR (=5.5).