An Inquest of Non-Linear Pulsations in BQ Serpens and VX Puppis

Details An Inquest of Non-Linear Pulsations in BQ Serpens and VX Puppis An Inquest of Non-Linear Pulsations in BQ Serpens and VX Puppis

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.4610f&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #46.10; Bulletin of the American Astronomical Society, Vol. 32, p.1478

Astronomy and Astrophysics

Astronomy

Scientific paper

We present analysis of two double mode Cepheid variable stars, BQ Serpens and VX Puppis. Observations were obtained using Johnson UVBRI photometry with the Four College Consortium's (FCCAPT) Automatic Photometric Telescope. Performing Fourier exapansion, we have refined the fundamental frequency of pulsation for BQ Serpens to be 0.2341 c/d and the first overtone to 0.3320 c/d. For VX Puppis, the fundamental frequency and first overtone are 0.3320 c/d and 0.4674 c/d, respectively. Decomposing the variation to both the fundamental and first overtone exposes non-linear coupling terms. Here, we calculate the distribution of energy among these various modes of interaction based on Pardo and Poretti's analysis of the double mode Cepheid TU CAS. This research is funded by NSF Grants #AST86-16362,\ #AST91-15114, #AST95-28906, and #AST-0071260 to the College of Charleston

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