[7.06] A multi-color study of RR Lyrae variables in the globular cluster NGC 5272 (M3)

AAS 200th meeting, Albuquerque, NM, June 2002
Session 7. Variable Stars and Relatives
Display, Monday, June 3, 2002, 9:20am-6:30pm, SW Exhibit Hall

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[7.06] A multi-color study of RR Lyrae variables in the globular cluster NGC 5272 (M3)

C. Cacciari (Osservatorio Astronomico di Bologna), T. M. Corwin (UNC Charlotte), B. W. Carney (UNC Chapel Hill)

We have performed a detailed study of the pulsational and evolutionary characteristics of a large sample of RR Lyrae stars in the globular cluster NGC 5272 (M3) using highly accurate BVI data taken on three separate epochs. A Fourier decomposition analysis has been done for both RRab and RRc variables. The occurrence and characteristics of the Blazhko effect have been analyzed in particular detail. M3 seems to contain a large number of Blazhko stars, and also a number of overluminous RR Lyrae stars that may have evolved off the ZAHB.

The author(s) of this abstract have provided an email address for comments about the abstract: mcorwin@uncc.edu

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