Rapid line profile-variability of the A-type shell- and possible pre-main sequence star HD 163296

Details Rapid line profile-variability of the A-type shell- and possible pre-main sequence star HD 163296 Rapid line profile-variability of the A-type shell- and possible pre-main sequence star HD 163296

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...209..268b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 209, no. 1-2, Jan. 1989, p. 268-278.

Astronomy and Astrophysics

Astrophysics

31

A Stars, Line Shape, Pre-Main Sequence Stars, Stellar Atmospheres, Stellar Spectra, Emission Spectra, Spectrum Analysis, Stellar Composition, Stellar Oscillations

Scientific paper

High-resolution CCD spectra of the possible premain sequence star HD 163296 were obtained in four spectral regions encompassing the lines Ca II 3933 A, Mg II 4481 A, Si II 6347 A and 6371 A, and H-alpha. Although the absorption lines all show considerable rapidly-varying distortions in the form of overall asymmetries and/or multiple components, no genuine period has been detected. The observations are consistent with the assumption of multimode nonradial pulsation.

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