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Proper motions of stars in the globular clusters using WFI@2.2 m telescope

Published online by Cambridge University Press:  07 March 2018

Devesh P. Sariya ,
Ing-Guey Jiang  and
R. K. S. Yadav
Devesh P. Sariya
Affiliation:
Department of Physics and Institute of Astronomy, National Tsing-Hua University, Hsin-Chu, Taiwan email: deveshpath@gmail.com, jiang@phys.nthu.edu.tw
Ing-Guey Jiang
Affiliation:
Department of Physics and Institute of Astronomy, National Tsing-Hua University, Hsin-Chu, Taiwan email: deveshpath@gmail.com, jiang@phys.nthu.edu.tw
R. K. S. Yadav
Affiliation:
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India email: rkant@aries.res.in
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Abstract

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We present results of our studies for a sample of Galactic globular star clusters with the aim of deriving relative proper motions. We used CCD archival data observed with Wide Field Imager (WFI) mounted on ESO 2.2 m telescope at La Silla, Chile. Astrometric software designed by Anderson et al. is used to derive relative proper motions. The vector point diagrams show clear separation of field stars from the cluster stars. We used proper motions to determine membership probabilities and to produce color-magnitude diagrams with most probable cluster member stars. Our membership catalogue can be used to study the membership status of the peculiar stars including various variables reported in the literature.

Keywords

(Galaxy:) globular clusters: generalstars: kinematics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S330: Astrometry and Astrophysics in the Gaia sky , April 2017 , pp. 251 - 252
Copyright
Copyright © International Astronomical Union 2018 

References

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