GBT31GHZ - Green Bank Telescope 100-m 31-GHZ Radio Source Catalog
In this study, the authors present a detailed characterization of the impact of the discrete source foreground on arcminute-scale 31-GHz anisotropy measurements based upon two observational campaigns. The first campaign (the results of which are given in the OVRO31GHZ table) was carried out with the OVRO 40m telescope at 31 GHz from 2000 September through 2002 December. The second campaign (the results of which are given in the present table) used the GBT from 2006 February to May. A companion paper (Sievers et al. 2009arXiv0901.4540S) presents the five-year CBI total intensity power spectrum incorporating the results of the point-source measurements discussed here.
Reported error bars include a 10% and 5% rms gain uncertainty for GBT and OVRO measurements, respectively. Sources detected at greater than 4 sigma at 31 GHz are flagged (detection_flag = 'Y'); for this calculation, the random gain uncertainty was excluded. In all 3165 sources were observed. The GBT catalog (this table) contains 1490 sources. Of the 2315 useful OVRO observations many of the non-detections (and a few detections) were superceded by more sensitive GBT observations; the OVRO catalog contained in the HEASARC's OVRO31GHZ table therefore contains data on 1675 sources. The detection rate of the OVRO measurements was 11%, and that of the GBT measurements 25%. In all, 18% of the sources were detected at 31 GHz.
A 31 GHz survey of low-frequency selected radio sources. Mason B.S., Weintraub L., Sievers J., Bond J.R., Myers S.T., Pearson T.J., Readhead A.C.S., Shepherd M.C. <Astrophys. J., 704, 1433-1447 (2009)> =2009ApJ...704.1433M
The truncated NVSS source designation as given in this study, viz., 'NVSS JHHMMSS-DDMM', where the J2000.0 coordinates are used in the name. The CDS Dictionary of nomenclature of celestial Objects recommends the longer form 'NVSS JHHMMSS-DDMMSS' for NVSS sources. Users can recover these full NVSS names from the source position if so desired.
The Right Ascension of the NVSS radio source in the selected equinox. This was given in J2000.0 coordinates to a precision of 0.01 seconds of time in the original table.
The Declination of the NVSS radio source in the selected equinox. This was given in J2000.0 coordinates to a precision of 0.1 arcseconds in the original table.
The Galactic Longitude of the NVSS radio source.
The Galactic Latitude of the NVSS radio source.
The 31-GHz flux density at the position of the NVSS radio source, in mJy.
The uncertainty in the 31-GHz flux density, in mJy.
The 1.4-GHz NVSS integrated flux density, in mJy.
The uncertainty in the 1.4-GHz NVSS integrated flux density, in mJy.
The 1.4-GHz NVSS major axis, in arcseconds. If the source is unresolved, this is set to a null value.
The 1.4-GHz NVSS minor axis, in arcseconds. If the source is unresolved, this is set to a null value.
This flag parameter is set to 'Y' to indicate that there was a detection of >= 4 sigma at 31 GHz.
This flag parameter is set to 'Y' to indicate that a confusion correction has been performed on the measured 31-GHz flux density, as described in detail in Appendix A of the reference paper. In fact, in this table there are no such values.