Distribution of SiO and OH Maser Stars in the Galactic Plane

Details Distribution of SiO and OH Maser Stars in the Galactic Plane Distribution of SiO and OH Maser Stars in the Galactic Plane

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001chjaa...1..144j&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 1, p. 144-151

Astronomy and Astrophysics

Astrophysics

Stars: Late-Type, Maser, Galactic Distribution, Kinematics

Scientific paper

The observational results of the Nobeyama 45-m SiO maser survey and the Arecibo 305-m OH maser survey are assembled for an analysis of the distribution and kinematics of late-type stars in the Galactic plane. It is found that neither SiO maser stars nor OH maser stars show any concentration to the spiral arms, which imply that they do not belong to the arm population and quite possibly they are low-mass stars in late stage of evolution. A rotational curve is also derived for these objects and a few features which may be real are discussed and compared with those derived from planetary nebulae and AGB stars.

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