Round galactic spheroids with triaxial kinematics

Details Round galactic spheroids with triaxial kinematics Round galactic spheroids with triaxial kinematics

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..465a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, June 1, 1990, p. 465-473.

Astronomy and Astrophysics

Astronomy

13

Astronomical Models, Halos, Milky Way Galaxy, Stellar Motions, Distribution Functions, Equations Of Motion, Horizontal Branch Stars, Polar Coordinates

Scientific paper

The methods of Osipkov (1979) and Merritt (1985) are extended to produce slightly flattened spheroid models in round potentials. The shape of the velocity ellipsoid, which is aligned along local spherical polar coordinate vectors, depends only on the two parameters of the model. The kinematics and distribution of a sample of halo blue horizontal branch stars observed by Sommer-Larsen et al. (1990) are fitted by the model, which has a flattened density law with an axis ratio of q = 0.86.

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