Spectroscopic Observations of the Cepheid Variable Star X Cygni

Details Spectroscopic Observations of the Cepheid Variable Star X Cygni Spectroscopic Observations of the Cepheid Variable Star X Cygni

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.6016c&link_type=abstract

American Astronomical Society, AAS Meeting #211, #60.16; Bulletin of the American Astronomical Society, Vol. 39, p.846

Physics

Optics

Scientific paper

By monitoring the spectra of periodic variable stars, it is possible to establish a link between variations in spectral features and changes in the star's atmospheric conditions. In recent years, advances in technology have made it possible to perform phase-dependent spectroscopic studies with small telescopes and relatively inexpensive spectrographs.
We report the results of a project to search for changes in the spectrum of the Cepheid variable star X Cygni (P = 16.39 d) over a five-week period during Summer 2007. We employed a 14-inch Meade LX200GPS telescope and two spectrographs; a low resolution (6 Angstrom/pixel) transmission spectrograph based on the Rainbow Optics diffraction grating, and the SBIG Self-Guiding Spectrograph (1 Angstrom/pixel). A comparison and analysis of spectra obtained at five different phases in the pulsation cycle of X Cygni will be presented.
This research was supported by the National Science Foundation under Grant No. 0431664.

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