IRAS 19135+3937: An SRd variable as interacting binary surrounded by a circumbinary disc

Nadya Gorlova,H Van Winckel,N P Ikonnikova,M A Burlak,G V Komissarova,Alain Jorissen,C Gielen,J Debosscher,P Degroote

Monthly Notices of the Royal Astronomical Society（2015）

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摘要

Semi-regular (SR) variables are not a homogeneous class and their variability is often explained due to pulsations and/or binarity. This study focuses on IRAS 19135+3937, an SRd variable with an infrared excess indicative of a dusty disc. A time series of high-resolution spectra, UBV photometry as well as a very accurate light curve obtained by the Kepler satellite, allowed us to study the object ...

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关键词

stars: AGB and post-AGB,binaries: spectroscopic,circumstellar matter,stars: variables: general

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