Optical confirmation of a very compact bipolar nebula associated with the symbiotic star V1016 CYGNI

Details Optical confirmation of a very compact bipolar nebula associated with the symbiotic star V1016 CYGNI Optical confirmation of a very compact bipolar nebula associated with the symbiotic star V1016 CYGNI

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266l.113s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 266, Mar. 15, 1983, p. L113-L116.

Astronomy and Astrophysics

Astrophysics

50

Binary Stars, Nebulae, Stellar Envelopes, Stellar Spectrophotometry, Cygnus Constellation, Emission Spectra, Line Spectra, Mass Flow, Radial Velocity, Spatial Resolution, Spectral Resolution, Stellar Evolution, Stellar Mass Ejection, Stellar Rotation, Stellar Systems, Visible Spectrum

Scientific paper

Spectroscopic observations of very high spectral and spatial resolution in the visible region are reported on the peculiar object V1016 Cyg. They reveal a compact bipolar nebula consisting of two lobes separated by 0.40 arcsec in space and 51 km/s in radial velocity. The data are interpreted by a bipolar mass flow of 120 km/s expansion velocity along the major axis. Moreover, the observations are compatible with the existence of an equatorial ring structure expanding at a slower rate. For the ionized gas of the lobes, a mass 0.0002 solar mass is estimated. The spatio-kinematical structure of V1016 Cyg resembles that of the shells of slow novae or bipolar protoplanetary nebulae. The evolutionary scenario for all of these objects may be similar and related to mass loss in a symbiotic stellar system consisting of a late-type giant and a hot companion. The observed bipolar flow is expected to be perpendicular to the orbital plane of a hypothetical central binary.

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