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Infrared Stars with Strong 1665/1667-MHz OH Microwave Emission

W.J. Wilson, Philip R. Schwartz, Gerry X. Neugebauer, P. M. Harvey, E. E. Becklin

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Abstract

Microwave and infrared observations are presented of seven stars which have strong infrared and 1665- and 1667-MHz mainAine OH emission. The sources were selected by the fact that their I665/1667-MHz OH emission is stronger than any 1612-MHz OH emission. Five of these sources have associated H2O microwave emission. The sources are associated with M-type long-period variable stars and generally show only a small excess infrared radiation from 3 to 20 above that expected from the photosphere. The data are suggestive that both 1665/1667-MHz and 1612-MHz OH/IR stars form a continuous sequence in their intrinsic OH luminosities and their infrared properties.

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What this paper is about

Microwave and infrared observations are presented of seven stars which have strong infrared and 1665- and 1667-MHz mainAine OH emission. The sources were selected by the fact that their I665/1667-MHz OH emission is stronger than any 1612-MHz OH emission. Five of these sources have associated H2O microwave emission. The sources are associated with M-type long-period variable stars and generally show only a small excess infrared radiation from 3 to 20 above that expected from the photosphere. The data are suggestive that both 1665/1667-MHz and 1612-MHz OH/IR stars form a continuous sequence in their intrinsic OH luminosities and their infrared properties.

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Available abstract

Microwave and infrared observations are presented of seven stars which have strong infrared and 1665- and 1667-MHz mainAine OH emission. The sources were selected by the fact that their I665/1667-MHz OH emission is stronger than any 1612-MHz OH emission. Five of these sources have associated H2O microwave emission. The sources are associated with M-type long-period variable stars and generally show only a small excess infrared radiation from 3 to 20 above that expected from the photosphere. The data are suggestive that both 1665/1667-MHz and 1612-MHz OH/IR stars form a continuous sequence in their intrinsic OH luminosities and their infrared properties.

Key concepts: Physics, Astrophysics, Infrared, Stars, Microwave, Photosphere, Astronomy, Spectral line

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