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MK Process and the Am Stars

Published online by Cambridge University Press:  12 April 2016

S. Sreedhar Rao  and
K. D. Abhyankar
S. Sreedhar Rao
Affiliation:
Centre of Advanced Study in Astronomy Osmania UniversityHyderabad 500 007 -India.
K. D. Abhyankar
Affiliation:
Centre of Advanced Study in Astronomy Osmania UniversityHyderabad 500 007 -India.

Abstract

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The MK morphology of the spectra in the region λλ 3850-4400 Å of 28 Am stars has brought to light the tendency of these stars to form into groups in contrast to earlier findings by various authors (S. Sreedhar Rao & K. D. Abhyankar, 1991). The potential of such a study is seen in the revelation of the inherent flexibility of the stars in this sample, apparently leading to a selective binning of the species with distinctly similar signatures, viz., Ca ll K and Sr ll 4077 features, the blue and violet regions and the Am-shell features. These are found to be the essential discriminants on the basis of which a multi-dimensional classification of Am spectra in the domain of the MK process is attempted.

Type
I. General Properties of CP Stars
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 197 - 202
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

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