Other
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.5506m&link_type=abstract
American Astronomical Society, 184th AAS Meeting, #55.06; Bulletin of the American Astronomical Society, Vol. 26, p.949
Other
Scientific paper
A new method of delineating sinusoidal or s-Cepheids is presented. The method uses the values of < V > (the average intensity), /line{V} (the average magnitude), and Vmedian (the value of the median magnitude). Fourier coefficient data from galactic Cepheids is used to derive these terms in the V band and the differences between the various terms show systematic trends with increasing period. The Cepheids can be easily grouped into 3 divisions - short period s-Cepheids, intermediate period Cepheids (P<9 days), and long period Cepheids (P>9 days). The Hertzsprung progression has vitually no effect on the difference values over the various period ranges. Cepheids previously designated as s-Cepheids by others are compared to those found using the method outlined. The method is also applied to Cepheids in the Small Magellanic Cloud to examine its suitability as a pulsation mode discriminator.
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