A WSRT 21 CM deep survey of two fields in Hercules

Details A WSRT 21 CM deep survey of two fields in Hercules A WSRT 21 CM deep survey of two fields in Hercules

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...71...25o&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 71, no. 1, Oct. 1987, p. 25-38. ZWO-supported research.

Astronomy and Astrophysics

Astronomy

10

Astronomical Spectroscopy, Centimeter Waves, Constellations, Radio Galaxies, Radio Sources (Astronomy), Data Reduction, Galactic Nuclei, Radiant Flux Density

Scientific paper

A deep 21 cm survey, carried out with the Westerbork Synthesis Radio Telescope (WSRT), of two fields in the constellation of Hercules is presented. These areas were observed previously at 21 cm in the Leiden-Berkeley Deep Survey (LBDS), (Windhorst et al., 1984), but with a factor of three higher noise level. A complete sample is defined, containing 116 radio sources with a peak flux above 5 sigma, within the -7dB attenuation radius (0.464 deg). This complete sample is used to determine the 1412 MHz source counts down to 0.45 mJy. The counts from the current sample show the same small scale structure at about 1 mJy, as was found in previous surveys. A direct comparison is made with the LBDS observations of the same fields. It is shown that the 5 sigma peak flux cut-off in the complete sample is not stringent enough to sufficiently avoid contamination by spurious sources, especially when strong (S of not less than 100 mJy) sources are present in the field. Finally, a search was made for the variable sources.

Affiliated with

Also associated with

No associations

Rating

A WSRT 21 CM deep survey of two fields in Hercules does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A WSRT 21 CM deep survey of two fields in Hercules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A WSRT 21 CM deep survey of two fields in Hercules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1773075