The two periods of the Cepheid CO Aurigae

Details The two periods of the Cepheid CO Aurigae The two periods of the Cepheid CO Aurigae

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...159..269a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 159, no. 1-2, April 1986, p. 269-275.

Physics

40

Cepheid Variables, Stellar Physics, Stellar Spectra, Least Squares Method, Power Spectra, Time Series Analysis

Scientific paper

A comparison of different techniques of analysis applied to the observational data of CO Aur emphasizes the importance of a careful choice of the statistical techniques for the analysis of time series. A new set of observations performed in 1985 gives an independent confirmation of the previous results: CO Aur is a double-mode Cepheid with P1 = 1d.78304 and P2 = 1d.42776. The ratio between the two periods (0.8007) renders this star unique among the variable stars of this class.

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