Orbital evolution of the Carina dwarf galaxy and self-consistent determination of star formation history

	Orbital evolution of the Carina dwarf galaxy and self-consistent determination of star formation history
	Pasetto, S.1,2; Grebel, E. K.1; Berczik, P.1,4,5 ; Chiosi, C.3; Spurzem, R.1,4
刊名	ASTRONOMY & ASTROPHYSICS
	2011
卷号	525
关键词	galaxies: dwarf Local Group galaxies: kinematics and dynamics celestial mechanics galaxies: evolution
英文摘要	We present a new study of the evolution of the Carina dwarf galaxy that includes a simultaneous derivation of its orbit and star formation history. The structure of the galaxy is constrained through orbital parameters derived from the observed distance, proper motions, radial velocity, and star formation history. The different orbits admitted by the large proper motion errors are investigated in relation to the tidal force exerted by an external potential representing the Milky Way. Our analysis is performed with the aid of fully consistent N-body simulations that are able to follow the dynamics and the stellar evolution of the dwarf system in order to determine the star formation history of Carina self-consistently. We also find a star formation history characterized by several bursts, partially matching the observational expectation. We find also compatible results between dynamical projected quantities and the observational constraints. The possibility of a past interaction between Carina and the Magellanic Clouds is also separately considered and deemed unlikely.
收录类别	SCI
语种	英语
WOS记录号	WOS:000285193700008
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7902]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Univ Heidelberg, Zentrum Astron, Astron Rechen Inst, D-69117 Heidelberg, Germany 2.Max Planck Inst Astron, D-69117 Heidelberg, Germany 3.Univ Padua, Dept Astron, I-35100 Padua, Italy 4.Chinese Acad Sci, NAOC, Beijing 100012, Peoples R China 5.Natl Acad Sci Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine
推荐引用方式 GB/T 7714	Pasetto, S.,Grebel, E. K.,Berczik, P.,et al. Orbital evolution of the Carina dwarf galaxy and self-consistent determination of star formation history[J]. ASTRONOMY & ASTROPHYSICS,2011,525.
APA	Pasetto, S.,Grebel, E. K.,Berczik, P.,Chiosi, C.,&Spurzem, R..(2011).Orbital evolution of the Carina dwarf galaxy and self-consistent determination of star formation history.ASTRONOMY & ASTROPHYSICS,525.
MLA	Pasetto, S.,et al."Orbital evolution of the Carina dwarf galaxy and self-consistent determination of star formation history".ASTRONOMY & ASTROPHYSICS 525(2011).