摘要
TheYale／SanJuan南天自行计划（SouthernProperMotionProgram）简称SPM。SPM是美国里克（Lick）天文台北天自行计划（NPM）在南天的延伸。根据SPM计划，最终在南天相对暗的星系测定出大约一百万颗天体的绝对自行、位置、星等和颜色。SPM最初目的是研究银河系结构。现在SPM计划的目的已扩大了许多，其中包括建立一个暗的二级恒星参考系（secondaryreferencesystemofstars）；实现和Hipparcos自行系统以及河外参考架的连接。本文根据SPM扩展了的研究目的，着重介绍SPM计划研究的领域、进展和精度。
The Yale/San Juan southern proper motion program (SPM) is the extension of the Lick Observatory northern proper motion program to the southern hemisphere. With respect to faint galndes, the SPM will produce positions, absolute proper motion, magnitudes and colouxs for some one million stars in the southern sky. Originallty the purpose of the SPM was only to study the formation of a secondary reference system of faint staxs. Plans of the SPM are also to link the SPM and NPM data with the Hipparcos reference frame.According to the purpose of the SPM, the scope, progress and accuracy of the SPMare emphatically presented in the paper.
出处
《天文学进展》
CSCD
北大核心
1995年第2期107-111,共5页
Progress In Astronomy
