A survey of the distribution of lambda 2.8 CM radio continuum in nearby galaxies. VII - Four bright Virgo Cluster spirals

Details A survey of the distribution of lambda 2.8 CM radio continuum in nearby galaxies. VII - Four bright Virgo Cluster spirals A survey of the distribution of lambda 2.8 CM radio continuum in nearby galaxies. VII - Four bright Virgo Cluster spirals

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...166..107u&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 166, no. 1-2, Sept. 1986, p. 107-114.

Astronomy and Astrophysics

Astrophysics

12

Continuous Radiation, Radiation Distribution, Radio Emission, Spiral Galaxies, Virgo Galactic Cluster, Astronomical Maps, Flux Density, Polarization (Waves)

Scientific paper

In this part of the 10.7 GHz (2.8 cm) mapping survey of bright galaxies, the 100-m telescope of the Max-Planck-Institut fuer Radioastronomie was used to observe the four spiral galaxies: NGC 4254, NGC 4321, NGC 4501, and NGC 4569 close to the Virgo Cluster center. By combining their integrated flux densities at 10.7 GHz with published data at other wavelengths the radio continuum spectra have been derived. The results have been compared with the properties of noncluster spirals studied at the same frequency. Three objects of type Sb or later (NGC 4254, NGC 4321, and NGC 4501) were found to have rather bright disks. There is only marginal evidence for any distortions or displacements of their radio disks. The Sa b galaxy NGC 4569, which is deficient in gas, exhibits weak disk emission which is detectable only in its central part. A search for polarized emission in NGC 4254 and NGC 4321 yielded only upper limits.

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