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THE CURIOUS CASE OF THE "ECLIPSING" WC9 STAR HD 164270

PHILIP MASSEY, INGEMAR LUNDSTRÖM and BJÖRN STENHOLM
Publications of the Astronomical Society of the Pacific
Vol. 96, No. 582 (August 1984), pp. 618-624
Stable URL: http://www.jstor.org/stable/40678376
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
THE CURIOUS CASE OF THE "ECLIPSING" WC9 STAR HD 164270
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Abstract

The WC9 star HD 164270 faded by > 1 mag in June 1980 and September 1909. The photoelectric observations of the 1980 event, however, show that this remarkable occurrence was accompanied by no discernible change in the colors of the star. Null results of other Harvard patrol plates limit the allowed periods of these events to 70.8 yr, 35.4 yr, or 17.7 yr, and we give times of predicted eclipse in the hopes that others may confirm or eliminate one of these possibilities. If these events are eclipses, then any companion must be large and cool. We discuss limitations of the physical parameters of this alleged companion, and discuss alternate interpretations.

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