VLA observations of planetary nebulae at the Galactic Centre

Details VLA observations of planetary nebulae at the Galactic Centre VLA observations of planetary nebulae at the Galactic Centre

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...128..325g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 128, no. 2, Dec. 1983, p. 325-334. Research supported by the Nederlandse Organ

Astronomy and Astrophysics

Astronomy

73

Galactic Nuclei, Planetary Nebulae, Radiant Flux Density, Radio Sources (Astronomy), Density Distribution, Magellanic Clouds, Particle Flux Density

Scientific paper

The authors have observed a sample of 42 planetary nebulae in the direction of the Galactic Centre (GC). They used the Very Large Array (VLA) at a frequency of 4.9 GHz. They expect that ≡90% of the sample is physically associated to the GC region. About 25% of the nebulae show structures that indicate a shell distribution of the ionized gas. For all the detected sources the radio map, radio position, 6 cm flux density, deconvolved angular diameter and total ionized nebular mass are presented. The distribution of flux densities of the GC planetaries differs considerably from the distribution for nearby and Magellanic Clouds nebulae. This difference is explained by the strong selection effect of studying only optically confirmed planetary nebulae at the GC.

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