Observations of 86 GHz SiO maser emission in late-type stars

Details Observations of 86 GHz SiO maser emission in late-type stars Observations of 86 GHz SiO maser emission in late-type stars

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...233..477l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 233, no. 2, July 1990, p. 477-485.

Astronomy and Astrophysics

Astrophysics

15

Infrared Spectra, Interstellar Masers, Late Stars, Silicon Oxides, Stellar Atmospheres, Astronomical Photometry, Emission Spectra, Near Infrared Radiation, Rotational Spectra, Supergiant Stars

Scientific paper

Quasi-simultaneous infrared photometric and SiO maser spectroscopic observations are presented. SiO was detected in miras (5 objects), supergiants (2 objects), and OH/IR sources (7 objects); in a sample of seventeen oxygen-rich late-type candidates, only three OH/IR sources were not detected. A comparison between bolometric luminosities (derived from JHKLM photometric data) and SiO luminosities is presented. From this limited sample, it seems that the relative SiO luminosity is similar in OH/IR objects and in optically identified long period variables, suggesting that the previous attempts to detect 86 GHz SiO maser emission in OH/IR objects were largely unsuccessful mainly because of their larger distances.

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