The Nuclear Structure of the Sagittarius Dwarf Spheroidal Galaxy

Details The Nuclear Structure of the Sagittarius Dwarf Spheroidal Galaxy The Nuclear Structure of the Sagittarius Dwarf Spheroidal Galaxy

2003-09-02

arxiv.org/abs/astro-ph/0309044v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures. To be published in ``Satellites and Tidal Streams'', proceedings of the conference held in La Palma 26-30

Scientific paper

We present a study of the central parts of the Sagittarius dwarf spheroidal galaxy (Sgr). We found a clear overdensity of Sgr's stars around M~54 (hereafter NS). NS is well represented by a King model and it has the characteristics of a typical dwarf elliptical nucleus. Whether this means that M~54 has spiraled into the potential well of NS or that M~54 is the real nucleus and NS has formed into its potential wells, remains an open question to be addressed.

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