The Canis Major Dwarf Galaxy

Publications of the Astronomical Society of Australia

Geraint F. Lewis¹ 

[1] Rodrigo A. Ibata

关键词: Galaxy: structure;    Galaxy: evolution;    galaxies: dwarf;   

DOI  :  10.1071/AS04053

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

Recent observational evidence suggests that the Sagittarius dwarf galaxy represents the only major ongoing accretion event in the Galactic halo, accounting for the majority of stellar debris identified there. This paper summarises the recent discovery of another potential Milky Way accretion event, the Canis Major dwarf galaxy. This dwarf satellite galaxy is found to lie just below the Galactic plane and appears to be on an equatorial orbit. Unlike Sagittarius, which is contributing to the Galactic halo, the location and eventual demise of Canis Major suggests that it represents a building block of the thick disk.

【 授权许可】

Unknown