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Doppler Imaging of Starspots

Published online by Cambridge University Press:  12 April 2016

Steven S. Vogt  and
G. Donald Penrod
Steven S. Vogt
Affiliation:
Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California Santa Cruz
G. Donald Penrod
Affiliation:
Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California Santa Cruz

Abstract

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We discuss a newly-developed technique for spatially resolving starspots on some of the more rapidly rotating RS CVn stars. Basically, the method uses high resolution, very high signal-to-noise spectral line profiles and exploits the Doppler velocity correspondence between position across the stellar disk and wavelength position across a rotationally broadened line profile to synthesize an image of the star, showing the location, sizes, and shapes of its starspots. Though still in a developmental stage, the technique is already yielding information about the structure and general appearance of starspots. Examples of Doppler Imaging observations of HR 1099 will be presented, along with a movie showing the behavior of synthetic line profiles generated from a computer spot model.

Type
Session III: Observed Activity in Related Objects
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 379 - 385
Copyright
Copyright © Reidel 1983

References

Bopp, B. W., and Fekel, F.: 1976, A. J., 81, 771.Google Scholar
Bopp, B. W., and Noah, P. V.: 1980, P.A.S.P., 92, 717.CrossRefGoogle Scholar
Bumba, V., and Howard, R. : 1965, Ap. J., 141, 1502.CrossRefGoogle Scholar
Dorren, J. D., and Guinan, E. F.: 1982, Ap. J., 252, 296.CrossRefGoogle Scholar
Dorren, J. D., Siah, M. J., Guinan, E. F., and McCook, G. P.: 1981, A. J. 86, 572.CrossRefGoogle Scholar
Eaton, J. A., and Hall, D. S.: 1979, Ap. J., 227, 907.CrossRefGoogle Scholar
Fekel, F.: 1980, Bull. A. A. S., 12, 500. .1982, preprint.Google Scholar
Galloway, D. J., and Weiss, N. O.: 1981, Ap. J., 243, 945.CrossRefGoogle Scholar
Robinson, L. B., and Wampler, E. J.: 1972, P. A. S. P., 84, 162.Google Scholar
Soderblom, D. R., Hartoog, M. R., Herbig, G. H., Mueller, F. S., Robinson, L. B., and Wampler, E. J.: 1978, in Proc. 4th Int. Coll. Ap., ed. Hack, M. (Trieste: Trieste Ap. Obs.), p. 449.Google Scholar
Vogt, S. S.: 1981a, Ap. J., 250, 327.. 1981b, S. P. I. E., 290, 70.CrossRefGoogle Scholar