funded by the National Natural Science Foundation of China (NSFC) (Grant No.10673005)
On the basis of recently published astrophysical parameters of the open clusters, we have selected 301 clusters with measurements of their kinematical parameters to trace the local structure and kinematics of the Gala...
Supported by the National Natural Science Foundation of China (Grant No. 10673005);Foundation of the Chinese Academy of Sciences (Grant No. KJCX2-YW-T13)
Revised Hipparcos data were released by van Leeuwen in 2007.In this article revised Hipparcos trigo-nometrical parallaxes are used to derive a period-luminosity zero-point in the optical V band.Adopting a fixed slope ...
supported by the National Natural Science Foundation of China (grantNos. 10333050 and 10673005).
With the new Hipparcos data recently released, we reexamine the kinematics in the solar neighborhood. Two different populations of objects, namely the thin-disk O-B5 stars and the thick-disk K-M giants, are selected f...