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Spectral Line-Profile Variability as a Probe for ℓ and m

Published online by Cambridge University Press:  08 February 2017

C. Schrijvers  and
J.H. Telting
C. Schrijvers
Affiliation:
Anton Pannekoek Instituut, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, Netherlands
J.H. Telting
Affiliation:
Isaac Newton Group of Telescopes, ASTRON/NFRA, Apartado 321, 38780 Santa Cruz de La Palma, Spain

Extract

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We investigate the observable spectroscopic characteristics of non-radial pulsation for stars with rotation rates large enough to resolve the stellar surface by Doppler imaging. We show that the intensity variations in time series of theoretical spectra, at each position in the line profile, cannot be described by a single sinusoid: at least one harmonic sinusoid needs to be included to describe the data. Across the line profile the relative amplitudes and phases of both these sinusoids vary independently.

Type
VI. Asteroseismology II
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 393 - 394
Copyright
Copyright © Kluwer 1998 

References

Schrijvers, C., Telting, J.H., Aerts, C., Ruymaekers, E., Henrichs, H.F., 1997, A&AS 121, 343 Google Scholar
Telting, J.H., Schrijvers, C. 1997a, A&A 317, 723 Google Scholar
Telting, J.H., Schrijvers, C. 1997b, A&A 317, 742 Google Scholar
Schrijvers, C., Telting, J.H. 1998, A&A, in prep Google Scholar