Computed spectral line variations for oblique non-radial pulsators

Details Computed spectral line variations for oblique non-radial pulsators Computed spectral line variations for oblique non-radial pulsators

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...67..147b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 67, no. 1, Jan. 1987, p. 147-155.

Astronomy and Astrophysics

Astrophysics

9

Periodic Variations, Spectral Line Width, Stellar Oscillations, Line Shape, Radial Velocity, Signal To Noise Ratios

Scientific paper

Spectral line profiles are computed for non-radially pulsating CP2 stars. For a range which currently is thought to be typical for these stars, the influence of six parameters on the line profiles of single mode pulsators is investigated: mode order l and degree m, pulsation velocity amplitude, angle between the rotation and pulsation axis, angle between the rotation axis and the line-of-sight, and phase angle of the rotation. In view of the expected low signal-to-noise ratio of observational data, the authors study to what extent easily measurable, simple quantities can still be useful in discriminating between different modes.

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