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Title:
The Perkins catalog of revised MK types for the cooler stars
Authors:
Keenan, Philip C.; McNeil, Raymond C.
Affiliation:
AA(Perkins Observatory, Delaware, OH), AB(Northern Kentucky University, Highland Heights, KY)
Publication:
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 71, Oct. 1989, p. 245-266. (ApJS Homepage)
Publication Date:
10/1989
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Astronomical Catalogs, Late Stars, Stellar Spectra, Classifications, Spectrograms, Tables (Data)
DOI:
10.1086/191373
Bibliographic Code:
1989ApJS...71..245K

Abstract

A catalog is presented listing the spectral types of the G, K, M, and S stars that have been classified at the Perkins Observatory in the revised MK system. Extensive comparisons have been made to ensure consistency between the MK spectral types of stars in the Northern and Southern Hemispheres. Different classification spectrograms have been gradually improved in spite of some inherent limitations. In the catalog, the full subclasses used are the following: G0, G5, G8, K0, K1, K2, K3, K4, K5, M0, M1, M2, M3, M4, M5, M6, M7, and M8. The irregularities are the price paid for keeping the general scheme of the original Henry Draper classification.

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Source Paper     Catalog Description     Catalog Description    


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