The Galactic Kinematics of Mira Variables

Details The Galactic Kinematics of Mira Variables The Galactic Kinematics of Mira Variables

2002-07-09

arxiv.org/abs/astro-ph/0207194v1

Astronomy and Astrophysics

Astrophysics

7 pages, 2 figure, to be published in Mass-Losing Pulsating Stars and their Circumstellar Matter, Y. Nakada & M. Honma (eds) K

Scientific paper

The galactic kinematics of Mira variables derived from radial velocities, Hipparcos proper motions and an infrared period-luminosity relation are reviewed. Local Miras in the 145-200day period range show a large asymmetric drift and a high net outward motion in the Galaxy. Interpretations of this phenomenon are considered and (following Feast and Whitelock 2000) it is suggested that they are outlying members of the bulge-bar population and indicate that this bar extends beyond the solar circle.

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