J/ApJS/93/145      Radio survey around north ecliptic pole (Kollgaard+, 1994)
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Beginning of ReadMe : J/ApJS/93/145 Radio survey around North Ecliptic Pole (Kollgaard+, 1994) ================================================================================ A Sensitive 1.5 GHz radio survey around the North Ecliptic Pole KOLLGAARD R.I., BRINKMANN W., MCMATH CHESTER M., FEIGELSON E.D., HERTZ P., REICH P., WIELEBINSKI R. <Astrophys. J. Suppl. Ser. 93, 145 (1994)> =1994ApJS...93..145K (SIMBAD/NED Reference) ================================================================================ ADC_Keywords: Radio sources Keywords: catalogs - radio continuum: general - surveys - X-rays: general Abstract: A 29.3deg^2 region surrounding the north ecliptic pole (NEP; R.A.=18h00m, Dec.=+66d30m) was mapped with the Very Large Array at 1.5GHz to support the deepest portion of the ROSAT all-sky soft X-ray survey. The resulting VLA-NEP survey catalog contains 2435 radio sources with flux densities in the range of 0.3-1000mJy, including over 200 fainter than 1mJy. The 28 fields of the inner 1.5deg have noise levels sigma  =60uJy, and the 85 fields centered between 1.5deg and 3.0deg from the NEP have sigma  =120uJy. The typical spatial resolution is 20" HPBW, and most positions are accurate to <2". Approximately 6% of the sources are found to be extended with size >30". We have compared the VLA-NEP catalog with four other radio catalogs made at lower resolution, as well as with the NASA Extragalactic Database and find counterparts for  18% of the VLA-NEP objects. The normalized, differential radio source count is in agreement with the previous studies. Between 1 and 150mJy the slope of the logN-logS relation is 0.68+/-0.03. Addresses: Kollgaard R.I. McMath Chester M. Feigelson E.D. <edf@Feigelson> Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 Brinkmann W. Max-Planck-Institut fur Extraterrstrische Physik, Giessenbach strasse, 85740 Garching, Germany Hertz P. E.O. Hulburt Center for Space Research, Naval Research Laboratory, Code 7621.5, Washinton, DC 20375-5352 Reich P. Wielebinski R. Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany

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