Radio observations and analysis of Nova V1500 Cygni

Details Radio observations and analysis of Nova V1500 Cygni Radio observations and analysis of Nova V1500 Cygni

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85..283s&link_type=abstract

Astronomical Journal, vol. 85, Mar. 1980, p. 283-293.

Astronomy and Astrophysics

Astronomy

17

Novae, Radio Astronomy, Bremsstrahlung, Cygnus Constellation, Flux Density, Infrared Astronomy

Scientific paper

Results and analysis of radio observations of Nova V1500 Cygni (1975) are presented. The data are consistent with thermal bremsstrahlung from an expanding cloud of ionized gas. Our data, combined with curves published by Hjellming (1977), are fit to thick shell models with density laws of the form n(e) equals A/r to the n. The models required a large velocity dispersion with the outer shell boundary having V = 3600 D km/s, where D is the distance to the nova in kpc. The radio data therefore indicate the presence of a high velocity component not readily detectable in the optical emission line data, although it is detectable in the prenebular absorption line data. By combining the radio data with the infrared data of Ennis et al. (1977), it is shown that the ejected shell must have been ionization bounded during the first several weeks after the outburst, and density bounded thereafter.

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