Accuracy Diagrams for the Galactic Rotation Curve and Kinematical Distances

被引:17
|
作者
Sofue, Yoshiaki [1 ,2 ]
机构
[1] Meisei Univ, Dept Phys, Tokyo 1918506, Japan
[2] Univ Tokyo, Inst Astron, Tokyo 1810015, Japan
关键词
astrometry: distance; astrometry: proper motion; galaxies: ISM; galaxies: kinematics; galaxies: rotation curve; galaxies: the Galaxy; STAR-FORMING REGION; MILKY-WAY-GALAXY; 3-DIMENSIONAL DISTRIBUTION; VERA ESTIMATION; ASTROMETRY; DISK; ISM;
D O I
10.1093/pasj/63.4.813
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We revisit methods used to determine the Galactic rotation curve and kinematical distances from radial velocities and proper motions. We construct "accuracy diagrams" to show the distributions in the galactic plane of expected uncertainties in the derived quantities, such as rotation velocities and kinematical distances. We discuss how to optimize the source selection for measurements of kinematical quantities based on accuracy diagrams.
引用
收藏
页码:813 / 821
页数:9
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