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Local Kinematics Of Classical Cepheids

  • [设施]:长短波
  • [期刊/会议名称]:ASS
  • [摘要]:Combining Hipparcos proper motions and the radial velocity data, we have studied the Cepheid kinematics on the basis of the three-dimensional Ogorodnikov-Milne model. The results seem to show a slight contracting motion of the Galaxy in the solar neighbourhood, partial derivative V-theta/partial derivative theta/R = -2.60 +/- 1.07 km s(-1) kpc(-1), which is along the solar circle. Under the hypothesis of a circular stream model, we have determined the galactic rotation V-theta = -240.5 +/- 10.2 km s(-1) for the classical Cepheids.
  • [发表日期]:2000
  • [第一作者]:朱紫
  • [第一作者单位]:陕西天文台
  • [通讯作者]:朱紫
  • [通讯作者单位]:陕西天文台
  • [论文类型]:国外论文
  • [期刊分类]:
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  • [卷号]:4
  • [期号]:271
  • [起止页码]:353-363
  • [简介]: