SiO and H2O maser emission in OH/IR objects and late-type variable stars

Details SiO and H2O maser emission in OH/IR objects and late-type variable stars SiO and H2O maser emission in OH/IR objects and late-type variable stars

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...160..352n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 160, no. 2, May 1986, p. 352-366.

Astronomy and Astrophysics

Astrophysics

59

Hydroxyl Emission, Infrared Stars, Interstellar Masers, Stellar Envelopes, Variable Stars, Water Masers, Late Stars, Mira Variables, Radial Velocity, Silicon Oxides, Stellar Spectra

Scientific paper

The authors have searched for 86 GHz SiO (υ = 1, J = 2-1) and H2O maser emission towards ≡20 unidentified OH/IR objects and ≡35 optically identified variable stars (mostly Mira variables) during a period of four years. Many of the sources were observed several times, giving some information on their temporal variations. 86 GHz SiO emission was clearly seen in only one OH/IR object, whereas eleven of the variable stars were detected, nine of them for the first time in this line. The authors have also searched for 43 GHz SiO (υ = 1 and 2, J = 1-0) emission towards eleven OH/IR objects and five sources were detected in both lines. H2O emission was detected in nine OH/IR objects, four of which are new detections.

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