Abstract
A new radial velocity curve of V 1329 Cyg has been obtained from emission lines originating around an evolved star. The latter might be faced by an M-type mate, whose mass is larger than 23±6 solar masses. The system seems at |Z|>250 pc from the galactic plane. The λ6830 unidentified band, found in V 1329 Cyg and among BQ [ ] stars, symbiotic stars and a few planetary nebulae, could be used as a diagnostic tool to identify very evolved stars. The close similarity of the optical spectrum of V 1329 Cyg to that of the optical counterpart of GX 1+4 is remarkable.
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On leave from Nagoya University, Japan.
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Iijima, T., Mammano, A. & Margoni, R. The possibly massive symbiotic system V 1329 Cygni. Astrophys Space Sci 75, 237–256 (1981). https://doi.org/10.1007/BF00648640
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DOI: https://doi.org/10.1007/BF00648640