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Infrared spectroscopy of radio-luminous OH/IR starsLow-resolution 1.5-2.5-micron spectra for 21 radio-luminous OH/IR stars are presented. These spectra divide into two broad classes. Those with very strong water-vapor absorption closely resemble the spectra of classical Mira variables and are classified Type VM. Those with weaker water-vapor absorption, but still showing strong CO absorption, resemble the spectra of true core-burning supergiants and are classified Type SG. Comparison of the classification of 30 radio-luminous OH/IR stars with their Delta(V)s and luminosities suggests this classification is a good indicator of the intrinsic nature of the underlying star. There is some evidence, however, that some true supergiants (massive main-sequence progenitors) develop the pulsation properties and photospheric characteristics of the Mira-like OH/IR stars when they become optically obscured OH/IR stars.
Document ID
19880036066
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jones, Terry Jay
(Minnesota, University Minneapolis, United States)
Hyland, A. R.
(Mount Stromlo and Siding Springs Observatories Canberra, Australia)
Fix, John D.
(Iowa, University Iowa City, United States)
Cobb, Michael L.
(Steward Observatory Tucson, AZ, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Astronomical Journal
Volume: 95
ISSN: 0004-6256
Subject Category
Astronomy
Accession Number
88A23293
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-87-0011
CONTRACT_GRANT: NAGW-871
Distribution Limits
Public
Copyright
Other

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