期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 356, 期 4, 页码 1396-1402出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1111/j.1365-2966.2004.08579.x
关键词
stars : population II; galaxies : dwarf; local group; galaxies : nuclei
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 centre 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 centre.
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