Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.7504h&link_type=abstract
American Astronomical Society, 195th AAS Meeting, #75.04; Bulletin of the American Astronomical Society, Vol. 31, p.1480
Astronomy and Astrophysics
Astronomy
Scientific paper
BQ Serpens is one of fifteen known double-mode Cepheid variable stars. In this paper we present the analysis of approximately 900 Johnson B and V observations acquired from 1991 through 1999 with the Four College Consortium's Automatic Photoelectric Telescope (FCCAPT). These data have been analyzed for periodicities by a variety of techniques. In addition to the two primary frequencies (the fundamental and first overtone) with periods of 4.2712 days and 3.0124 days, respectively, we have found a number of cross-coupling modes due to nonlinear interactions between the two oscillations. This paper will report on the extent to which our data indicates changes in any of the pulsational parameters as compared to earlier studies. This work has been supported in part by NSF grants as #AST86-16362, #AST91-15114, #AST95-28906 and #USE-9156184 to the College of Charleston.
Dukes Robert J. Jr.
Holmes S. B.
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