期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
卷 122, 期 892, 页码 662-669出版社
UNIV CHICAGO PRESS
DOI: 10.1086/653589
关键词
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资金
- Fondecyt
- Chilean Center for Astrophysics FONDAP [15010003]
- BASAL Centro de Astrofisica y Tecnologias Afines (CATA) [PFB-06/2007]
We present multiwavelength broadband photometry and V, I time-resolved photometry for two variable bright stars in the SMC, OGLE004336.91-732637.7 (SMC-SC3) and OGLE004633.76-731204.3 (SMC-SC4). The light curves span 12 yr and show long-term periodicities (SMC-SC3) and modulated eclipses (SMC-SC4) that are discussed in terms of wide-orbit intermediate-mass interacting binaries and associated envelopes. SMC-SC3 shows a primary period of 238.1 days along with a complicated waveform suggesting ellipsoidal variablity influenced by an eccentric orbit. This star also shows a secondary variability with an unstable periodicity that has a mean value of 15.3 days. We suggest this could be associated with nonradial pulsations.
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