Pulsating CP2 stars. I - Alpha Circini (HD 128898)

Details Pulsating CP2 stars. I - Alpha Circini (HD 128898) Pulsating CP2 stars. I - Alpha Circini (HD 128898)

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...210..147s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 210, no. 1-2, Feb. 1989, p. 147-154.

Astronomy and Astrophysics

Astrophysics

12

A Stars, Magnetic Stars, Peculiar Stars, Stellar Spectrophotometry, Light Curve, Power Spectra, Stellar Interiors, Stellar Models, Stellar Oscillations, Stellar Rotation

Scientific paper

Simultaneous spectroscopic and photometric observations of the pulsating CP2 star Alpha Cir were obtained with high temporal resolution. Whereas Stromgren photometry clearly corroborates the known pulsation amplitude and frequency, success was not achieved in detecting spectral variations due to non-radial pulsation. An upper limit of about 100 m/s was determined for possible radial velocity variations.

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