Infrared absorption at 9.7 microns as an OH/IR star predictor

Details Infrared absorption at 9.7 microns as an OH/IR star predictor Infrared absorption at 9.7 microns as an OH/IR star predictor

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.235..123g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 235, Nov. 1, 1988, p. 123-137.

Astronomy and Astrophysics

Astronomy

22

Hydroxyl Emission, Infrared Absorption, Infrared Stars, Interstellar Masers, Maser Outputs, Infrared Astronomy Satellite, Planetary Nebulae, Silicates

Scientific paper

Forty-three infrared emitters whose IRAS LRS spectra show well-defined 9.7 μm absorption were searched for OH maser emission. Twenty-nine were identified as OH/IR stars, of which 18 were new detections. JHKL-band photometry was carried out on half the searched objects. The detected OH/IR stars are drawn in equal numbers from two different stellar populations. These two groups are distinguished observationally by the different expansion velocities of the OH shells. Two infrared sources are identified as probable young stellar objects from their OH main-line masers and two are possible proto-planetary nebulae.

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