Giant Metrewave Radio Telescope Lockman Hole 610-MHz Radio Source Catalog

Description

This table contains a source catalog based on observations of the Lockman Hole with the Giant Metrewave Radio Telescope (GMRT) taken at 610 MHz (49 cm). Twelve pointings were observed, covering a total area of ~5 deg<sup>2</sup> with a resolution of 6 x 5 arcsec<sup>2</sup>, position angle +45 degrees. The majority of the pointings have an rms noise of ~ 60 µJy/beam (µJy/beam) before correction for the attenuation of the GMRT primary beam. The techniques used for data reduction and the production of a mosaicked image of the region are described in the reference paper, where the final mosaic is presented, along with a catalog of 2845 sources detected above the 6-sigma threshold which is contained in this table. In the paper, radio source counts are calculated at 610 MHz and combined with existing 1.4-GHz source counts, in order to show that pure luminosity evolution of the local radio luminosity functions for active galactic nuclei and starburst galaxies is sufficient to account for the two source counts simultaneously. The 'central region' of the Lockman Hole, consisting of 12 pointings spaced by 36 arcminutes in a hexagonal pattern (shown in Fig. 1 of the reference paper) was observed on 2004 July 24 and 25 using the GMRT. The observations were made in two 16-MHz sidebands centered on 610 MHz, each split into 128 spectral channels, with a 16.9s integration time. This table was created by the HEASARC in February 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/387/1037">CDS Catalog J/MNRAS/387/1037</a> file catalog.dat. This is a service provided by NASA HEASARC .

Resources

Name Format Description Link
5 https://heasarc.gsfc.nasa.gov%2FW3Browse%2Fall%2Fgmrtlhcat.html
5 https://heasarc.gsfc.nasa.gov%2Fxamin%2Fvo%2Fcone%3Fshowoffsets%26table%3Dgmrtlhcat%26
5 https://irsa.ipac.caltech.edu%2Fdata%2FPlanck%2Frelease_2%2Fdocs%2FREADME.html
5 https://irsa.ipac.caltech.edu%2FSCS%3Ftable%3Dcom_pccs2e_100%26
21 gmrtlhcat.html https://heasarc.gsfc.nasa.gov/W3Browse/all/gmrtlhcat.html
5 https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=gmrtlhcat&

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