The unusual classical Cepheid HR 7308: 1966 1969

Details The unusual classical Cepheid HR 7308: 1966 1969 The unusual classical Cepheid HR 7308: 1966 1969

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ssrv...27..431b&link_type=abstract

Space Science Reviews, Volume 27, Issue 3-4, pp. 431-436

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Scientific paper

The small-amplitude classical cepheid HR 7308 has the shortest period known in our Galaxy for a classical cepheid. 1966 1969 photoelectric observations together with more recent data show a period of 1\underset{raise0.3emsmashriptscriptstyle\cdot}{d}49078 with sinusoidal light variations. Except for the presence of the beat period, no secondary period can be found in the extensive 1966 data. The lack of a secondary period near p1/p0 = 0.7 sets HR 7308 apart from many other short-period classical cepheids. The amplitude of HR 7308 varies an a timescale near 970 days. The variations may be periodic. The available data do not at present allow us to distinguish between the Blazhko Effect (modulation of a regular variation) and a model with two very close interfering periods in HR 7308.

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