Other
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95.1706e&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 95, June 1988, p. 1706-1716.
Other
30
Dwarf Galaxies, Elliptical Galaxies, Galactic Mass, Galactic Structure, Radial Distribution, Variable Stars, Globular Clusters, Schmidt Telescopes, Star Formation Rate
Scientific paper
The radial profile of the Sculptor dwarf elliptical galaxy has been determined from automated starcounts of UK Schmidt Telescope Unit plates. The ellipticity (e = 0.34±0.04) and position angle (P.A.(1950.0) = 95°.4±4°.3 ) are in agreement with those determined by Hodge (1961). These profiles have been compared with King (1966) models with a range of tidal and core radii. None have been found to give an excellent fit. The best fit achieved has rt = 95arcmin and rc = 8arcmin.9. Accepting these as roughly the correct values for the core and tidal radii, and using other data from the literature, the mass of the Galaxy has been estimated as MG ≈ 1.5±1.1×1011M_sun;. The current data do not argue against the hypothesis that the halo dwarfs are the results on ram-pressure stripping of dI systems by the Galactic halo.
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