Observational properties of V = 1, J = 1 - 0 SiO masers

Details Observational properties of V = 1, J = 1 - 0 SiO masers Observational properties of V = 1, J = 1 - 0 SiO masers

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...242..211j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 242, no. 1, Feb. 1991, p. 211-234.

Astronomy and Astrophysics

Astrophysics

86

Emission Spectra, Interstellar Masers, Interstellar Matter, Silicon Oxides, Flux Density, Luminous Intensity, Missing Mass (Astrophysics), Molecular Spectra, Stellar Spectra

Scientific paper

Complete results of an extensive survey of v = 1 and v = 0, J = 1 - 0 SiO emission from evolved stellar objects are reported. All results are tabulated and all spectra are displayed. The large data base of SiO observations acquired in this project allows the following conclusions: (1) SiO maser emission provides, on average, a good estimate of the stellar systemic velocity and there is no statistical evidence that gas tends to recede from or approach the star. This result suggests that the SiO masers exist inside the expanding circumstellar envelope; (2) SiO maser intensity is correlated with 12-micron IR flux; (3) SiO maser intensity is not correlated with 1612 MHz OH maser intensity, or by inference, with stellar mass loss rate; (4) maser action, as well as thermal emission, is common in v = 0, J = 1 - 0 emission.

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