Other
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....109.1263m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 109, no. 3, p. 1263-1268
Other
6
Categories, Cepheid Variables, Cycles, Light Curve, Recognition, Sine Waves, Time Functions, Amplitudes, Average, Data Reduction, Mean, Pulses, Stellar Magnitude
Scientific paper
A new method of delineating sinusoidal or s-Cepheids is presented. The methos uses the values of (V) (the mean intensity), V - Bar (the average magnitude), and Vmean (the value of the mean 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 less than 9 days), and long period Cepheids (P greater than 9 days). Cepheids previously designated as s-Cepheids by others are compared to those found using the method outlined here. 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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