On the IR variability of symbiotic stars - The case of V1016 Cygni, HM Sagittae, and V1329 Cygni

Details On the IR variability of symbiotic stars - The case of V1016 Cygni, HM Sagittae, and V1329 Cygni On the IR variability of symbiotic stars - The case of V1016 Cygni, HM Sagittae, and V1329 Cygni

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...298..350l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 298, Nov. 1, 1985, p. 350-356. Research supported by the Ministero della Pu

Astronomy and Astrophysics

Astrophysics

20

Infrared Stars, Light Curve, Stellar Envelopes, Stellar Spectra, Symbiotic Stars, Variable Stars, Color-Magnitude Diagram, Cygnus Constellation, Distance, Infrared Photometry, Mira Variables, Peculiar Stars, Stellar Models

Scientific paper

Infrared observations of the peculiar objects V1016 Cyg and HM Sge confirm their periodic variability. A three-component model (Mira, associated dust shell, and external shell) is suggested to account for the infrared spectral variations and for deriving a distance estimate. Much less variability is displayed by V1329 Cyg, but in 1983 May the star appeared to fade by 0.5 mag. A coincidence is suggested with the dip in the optical light curve at phase 0.6-0.7.

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