Dynamical models of a sample of Population II stars

Details Dynamical models of a sample of Population II stars Dynamical models of a sample of Population II stars

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..627l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 15, 1986, p. 627-634.

Astronomy and Astrophysics

Astrophysics

16

Dynamic Models, Emission Spectra, Star Distribution, Stellar Motions, Galactic Structure, Schwarzschild Metric, Velocity Distribution

Scientific paper

Dynamical models are constructed in order to investigate the implications of recent kinematic data of distant Population II stars on the emissivity distribution of those stars. Models are constructed using a modified Schwarzschild method in two extreme scale-free potentials, spherical and E6 elliptical. Both potentials produce flat rotation curves and velocity dispersion profiles. In all models, the distribution of stars in this sample is flat. Moreover, it is not possible to construct a model with a strictly spheroidal emissivity distribution. Most models have dimples at the poles. The dynamics of the models indicate that the system is supported by both the third integral and z angular momentum.

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