1Department of Astronomy, Nanjing University, Nanjing 210093
2Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical Center, Beijing University, Beijing 100871
Halo Mass of Three-Dimension Milky Way
PENG Fang1;PENG Qiu He1,2
1Department of Astronomy, Nanjing University, Nanjing 210093
2Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical Center, Beijing University, Beijing 100871
Abstract： We emphasize the effects of several factors on halo mass for our Galaxy, such as the disk thickness, the local surface density, and the shape of the rotation curve. By fitting the observed rotation curve of our Galaxy with the five-component model, we deduce a halo with a mass of 6.62x1011 MO within 50kpc and a local density of 0.009Mopc-3. It is found that the realistic Galaxy needs only about half of the halo mass that the Galaxy with an infinitesmally thin disk requires.
2000, Vol. 17 
