Near-Solar-Circle Method for Determination of the Galactic Constants
Astrophysics of Galaxies
2015-05-28 v1
Abstract
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.
Keywords
Cite
@article{arxiv.1105.1219,
title = {Near-Solar-Circle Method for Determination of the Galactic Constants},
author = {Y. Sofue and T. Nagayama and M. Matsui and A. Nakagawa},
journal= {arXiv preprint arXiv:1105.1219},
year = {2015}
}
Comments
5 pages, 4 figures, accepted for PASJ (Vol. 63 No. 5)