Vibrationally excited SiO: A new type of maser source in the millimeter wavelength region

Details Vibrationally excited SiO: A new type of maser source in the millimeter wavelength region Vibrationally excited SiO: A new type of maser source in the millimeter wavelength region

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195..359k&link_type=abstract

Astrophysical Journal, vol. 195, Jan. 15, 1975, pt. 1, p. 359-366.

Astronomy and Astrophysics

Astronomy

77

Infrared Stars, Masers, Millimeter Waves, Silicon Oxides, Stellar Radiation, Vibrational Spectra, Late Stars, M Stars, Microwave Emission, Mira Variables, Molecular Rotation, Radio Sources (Astronomy), Semiregular Variable Stars, Stellar Envelopes, Variable Stars

Scientific paper

The recently discovered strong emission lines at 86.24 GHz from the J = 2-1 rotational transition of SiO in its first excited vibrational state have been found to be a maser source associated with infrared stars. Twelve maser sources have been detected, and almost all are late M-type Mira or semiregular variables. Many of the known OH/H2O/IR sources are also SiO maser sources, and good velocity correlations between SiO and H2O emission profiles were found. Characteristics of these new SiO maser sources are discussed.

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