Infrared photometry of Mira variables - OH maser pumping efficiency

Details Infrared photometry of Mira variables - OH maser pumping efficiency Infrared photometry of Mira variables - OH maser pumping efficiency

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....85l...1e&link_type=abstract

Astronomy and Astrophysics, vol. 85, no. 1-2, May 1980, p. L1-L3.

Astronomy and Astrophysics

Astronomy

31

Hydroxyl Emission, Infrared Photometry, Masers, Mira Variables, Variable Stars, Astronomical Photometry, Free Radicals, Infrared Astronomy, Infrared Spectrometers, Optical Pumping, Spectrum Analysis, Stellar Envelopes, Stellar Temperature

Scientific paper

The result of 1.25-30 micron photometry of 12 long period variables are given. It is shown that the infrared spectrum is consistent with an underlying star of temperatures from 2000-3500 K surrounded by an envelope of opacity of about 0.1 for Miras and 6 for the OH-IR object IRC+10011. In addition, pumping of the OH maser emission by 35 micron photons in the shell is demonstrated as a possible mechanism in Mira variables as well as in objects without optical counterpart.

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