The central density cusp of the Sagittarius dwarf spheroidal galaxy

2; (2) INAF - Osservatorio Astronomico di Bologna; 3); (3) Universita' di Bologna); E. Pancino (2) ((1) INAF - Osservatorio Astronomico di Trieste; F.R. Ferraro (3); L. Monaco (1; M. Bellazzini (2)

arxiv: astro-ph/0411107 · v1 · submitted 2004-11-04 · 🌌 astro-ph

The central density cusp of the Sagittarius dwarf spheroidal galaxy

L. Monaco (1 , 2 , 3) , M. Bellazzini (2) , F.R. Ferraro (3) , E. Pancino (2) ((1) INAF - Osservatorio Astronomico di Trieste , (2) INAF - Osservatorio Astronomico di Bologna , (3) Universita' di Bologna) This is my paper

classification 🌌 astro-ph

keywords cuspdensitydwarfgalaxycentercentralobservedsagittarius

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We present an analysis of the density profile in the central region of the Sagittarius dwarf spheroidal galaxy. A strong density enhancement of Sgr stars is observed. The position of the peak of the detected cusp is indistinguishable from the center of M54. The photometric properties of the cusp are fully compatible with those observed in the nuclei of dwarf elliptical galaxies, indicating that the Sgr dSph would appear as a nucleated galaxy independently of the presence of M54 at its center.

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The central density cusp of the Sagittarius dwarf spheroidal galaxy

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