NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-15 T01:47:50 PST
Help | Comment | NED Home

For refcode 1990MNRAS.246..110M:
Retrieve 4726 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 1990MNRAS.246..110M The 7C survey of radio sources at 151 MHz - two regions centres at RA 10^h^ 28^m^, Dec. 41^deg^ and RA 06^h^ 28^m^, Dec. 45^deg^ Mark M. McGilchrist, J. E. Baldwin, J. M. Riley, D. J. Titterington, E. M. Waldram and P. J. Warner Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE Accepted 1990 March 23, Received 1990 March 22, in original form 1990 February 6 SUMMARY The 7C survey of radio sources is being made with the Cambridge Low-Frequency Synthesis Telescope at 151 MHz, with an angular resolution of 70 x 70 cosec {delta} arcsec^2^. We present the results from one part of of this survey covering 0.144 sr in two areas of sky centred at RA 10^h^ 2S^m^, Dec. 41^deg^ and RA 06^h^ 28^m^, Dec. 45^deg^ and reaching a limiting flux density of 50 mJy. A list of the positions, flux densities and angular sizes of 4723 sources is presented; the position errors are in the range 1-3 arcsec for sources with flux densities greater than 500 mJy, and the flux density errors are typically 18 mJy. About 10 per cent of the sources have apparent angular sizes greater than 60 arcsec. The derived source counts are as accurate as those presently available at 405 and 1400 MHz and show similar behaviour; in particular the convergence slopes are the same. The median spectral index between 151 and 408 MHz remains constant at ~0.9 between 10 and 0.5 Jy at 151 MHz.
Retrieve 4726 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home