GMRTELAIN1 ivo://nasa.heasarc/gmrtelain1 NASA/GSFC HEASARC Garn et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains a source catalog based on observations of the European Large-Area ISO Survey-North 1 (ELAIS-N1) field taken at 610 MHz with the Giant Metrewave Radio Telescope. Nineteen pointings were observed, covering a total area of ~ 9 square degrees with a resolution of 6 x 5 arcsec<sup>2</sup>, position angle of +45 degrees. Four of the pointings were deep observations with an rms of ~ 40 microJansky (µJy) before primary beam correction, with the remaining fifteen pointings having an rms of ~ 70 uJy. The techniques used for data reduction and production of a mosaicked image of the region are described in the reference paper, where the final mosaic, along with a catalog of 2500 sources detected above a 6-sigma threshold, are presented. This work complements the large amount of optical and infrared data already available on the region. In their paper, the authors calculate 610-MHz source counts down to 270 uJy, and find further evidence for the turnover in differential number counts below 1 mJy, previously seen at both 610 MHz and 1.4 GHz. For further details of the surveys and data analysis procedures, please refer to the published paper. This table contains the ELAIS-N1 catalog of 2500 detected 610-MHz radio sources. This table was created by the HEASARC in February 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/383/75">CDS Catalog J/MNRAS/383/75</a> file catalog.dat. This is a service provided by NASA HEASARC . 2008MNRAS.383...75G https://heasarc.gsfc.nasa.gov/W3Browse/all/gmrtelain1.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=gmrtelain1& GET text/xml 180 99999 true 242.72620833 53.36944444 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=gmrtelain1 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_gmrtelain1&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.0833333333333333 Radio public gmrtelain1 Giant Metrewave Radio Telescope ELAIS-N1 Field 610-MHz Radio Sou name IAU Designation of Source (GMRTEN1 JHHMMSS.s+DDMMSS) meta.id;meta.main char nullable ra Centroid Right Ascension degree pos.eq.ra;meta.main double nullable dec Centroid Declination degree pos.eq.dec;meta.main double nullable flux_610_mhz Peak Pixel Brightness (in mJy/beam) mJy/beam phot.flux.density;em.radio.400-750MHz double nullable rms_610_mhz Local RMS Noise (in mJy/beam) mJy/beam stat.error;phot.flux.density;em.radio.400-750MHz double nullable int_flux_610_mhz Integrated Flux at 610MHz mJy phot.flux.density;em.radio.400-750MHz double nullable int_flux_610_mhz_error Error for Integrated Flux mJy stat.error;phot.flux.density;em.radio.400-750MHz double nullable sextractor_db_flag Source Extractor Flag [0123] meta.code.qual short nullable bii Centroid Galactic Latitude degree pos.galactic.lat double nullable centroid_y_pixel Centroid Y Pixel Location (Nearest Pixel) pos.cartesian.y;instr.pixel short nullable centroid_x_pixel Centroid X Pixel Location (Nearest Pixel) pos.cartesian.x;instr.pixel short nullable lii Centroid Galactic Longitude degree pos.galactic.lon double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable