The Intermediate-Period Cepheid Strip Stars

Details The Intermediate-Period Cepheid Strip Stars The Intermediate-Period Cepheid Strip Stars

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....123..965s&link_type=abstract

The Astronomical Journal, Volume 123, Issue 2, pp. 965-982.

Astronomy and Astrophysics

Astronomy

9

Stars: Variables: Cepheids, Stars: Variables: Rr Lyrae Variable

Scientific paper

To explore the population of variable stars that fall between RR Lyrae stars and classical Cepheids, we have obtained extensive photometric observations for 56 stars with periods between 0.6 and 1.0 days. For these stars and an additional 10, we have examined the form and stability of the light curves to explore the variety of types of stars in this period regime. We conclude that the majority of the sample are Bailey type ab RR Lyrae stars. However, a surprising number that possibly exhibit the Blazhko effect are found. There are a half-dozen other stars that do not appear to be in either of these two groups. One is the well-known multimode pulsator AC And. We suggest that two of the others may be anomalous Cepheids and two may be type II Cepheids.

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