The semiregular variable FS Comae - Evidence for radial oscillations

Details The semiregular variable FS Comae - Evidence for radial oscillations The semiregular variable FS Comae - Evidence for radial oscillations

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..360t&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 686, p. 360-366.

Astronomy and Astrophysics

Astronomy

3

Semiregular Variable Stars, Stellar Oscillations, Radial Velocity, Stellar Luminosity, Stellar Spectrophotometry

Scientific paper

We present newly obtained radial-velocity measurements of the semiregular variable FS Comae, together with available photoelectric data and visual brightness estimates. Both the light variations in the V band and the radial velocities show a similar periodicity of about 55 days, with a phase lag of approximately 40 days between the two. These observations strongly suggest radial pulsation as the mechanism driving the variations. There is evidence that both the photometric period and the spectroscopic period are variable over long time scales.

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