Near-Solar-Circle Method for Determination of the Galactic Constants

Details Near-Solar-Circle Method for Determination of the Galactic Constants Near-Solar-Circle Method for Determination of the Galactic Constants

2011-05-06

arxiv.org/abs/1105.1219v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

5 pages, 4 figures, accepted for PASJ (Vol. 63 No. 5)

Scientific paper

We propose a method to determine the galactic constants R_0 (distance to the Galactic Center) and V_0 (rotation velocity of the Sun) from measurements of distances, radial velocities and proper motions of objects near the solar circle. This is a modification of the solar-circle method to a more practical observational method. We apply the method to determine R_0 using data from the literature with known distances and radial velocities, and obtain R_0 = 7.54 +/- 0.77 kpc.

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