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Criteria and Applications for Spectral Classification Outside the MK Domain

Published online by Cambridge University Press:  12 April 2016

M. F. McCarthy S. J.
M. F. McCarthy S. J.*
Affiliation:
Vatican Observatory

Abstract

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The area under discussion here lies beyond the domain of the MK system and includes studies of natural groups as detected in low dispersion studies; it extends to spectral regions studied now in the far ultraviolet and in the infrared and radio regions; in this paper primary consideration is given to optical spectra from the near infrared to the near ultraviolet. We give a description of “natural groups” and a brief description of new possibilities opened for research in this area through the introduction of thin prisms and the combination of prism and grating (GRISM). Finally a summary of spectral criteria useable outside the MK domain is presented.

Type
III Criteria and Applications Outside the MK Domain
Information
International Astronomical Union Colloquium , Volume 47: Spectral Classification of the Future , 1979 , pp. 103 - 115
Copyright
Copyright © Vatican Observatory 1979

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