Local density gradient and galactic parameters determined from nearby stars
Abstract
(i) A solution of the LiouvilleBoltzmann equation has been fitted to a group of stars catalogued by Woolley et al. By integration of this solution, the mass density gradient in the solar vicinity has been computed, resulting in ( log via log R)R, =  for the standard values of the Oort constants. (ii) With Freeman's exponential model of the Galaxy, A fixed to be 15 km 1 kpc1 and the fitted solution, some of the local rotation parameters and the surface density gradient have been computed, the results are as follows:ARo = 18kms1, ( log logR) = 28103,B = 107 s1 km i kpc1, R0 = kpc, V0 = 228124 km si. in this case the density gradient is (a log v/a log R)n, =  1 .
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 July 1974
 DOI:
 10.1093/mnras/168.1.41
 Bibcode:
 1974MNRAS.168...41C