Periodical
3 VULPECULAE: A NON-RADIAL PULSATOR IN A ONE-YEAR BINARY SYSTEM
| العنوان: | 3 VULPECULAE: A NON-RADIAL PULSATOR IN A ONE-YEAR BINARY SYSTEM |
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| المؤلفون: | Hube, Douglas P., Aikman, G. C. L. |
| المصدر: | Publications of the Astronomical Society of the Pacific; January 1991, Vol. 103 Issue: 659 p49-62, 14p |
| مستخلص: | 3 Vul is found to be a single-lined spectroscopic binary with a period of 367 days, very nearly equal to one year. Velocity observations over two decades, in combination with archival data, have produced sufficiently good phase coverage to yield a well-defined orbit. Nonetheless, residuals from a Keplerian velocity curve are large than expected for the sharp-lined B6 III primary: Night-to-night and possibly more rapid non-Keplerian radial-velocity variations occur. High-resolution observations of Si II lines reveal marked line-profile changes during single and successive nights. Preliminary evidence suggests that low-amplitude photometric variations may be present also. It is suggested that the primary is a member of the nonradially pulsating '53 Persei' class of variable stars. |
| قاعدة البيانات: | Supplemental Index |
Full Text Finder | تدمد: | 00046280 15383873 |
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| DOI: | 10.1086/132794 |