A deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area

Details A deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area A deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.209..683b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 209, Aug. 1, 1984, p. 683-695. Research supported by th

Astronomy and Astrophysics

Astronomy

10

Astronomical Catalogs, Milky Way Galaxy, Northern Sky, Radio Astronomy, Astronomical Maps, Radio Spectra, Statistical Distributions

Scientific paper

The 100-m Effelsberg telescope of MPIfR has been used to carry out a 4.85-GHz survey of the 5C12 area. The survey is complete to 18 mJy, and 93 sources are catalogued. Positions and flux densities are compared with other available data to check both random and systematic errors, and in particular to test for radial polar diagram errors in the 5C12 survey. Source counts from the catalogue agree with those from other surveys, confirming the drop below a Euclidean law towards mJy levels, and providing no evidence of anisotropy on scales of degrees. The spectral index distribution shows that a dramatic change in the source population takes place as the 5-GHz flux density level is decreased: the distribution is dominated by steep spectrum sources, unlike the bimodal (flat spectrum and steep spectrum) distribution seen at Jy-levels. Comparison of long and short baseline spectral index distributions shows that this change cannot be due to the presence of high redshift objects with spectral curvature.

Affiliated with

Also associated with

No associations

Rating

A deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area 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 deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A deep radio/optical survey near the north galactic pole. III - A 4.85-GHz survey of the 5C12 area will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1677527