會徽Logo
名稱Title
2021天文年會
國立嘉義大學蘭潭校區
5月21日至23日

論文摘要

Studying Membership, Basic Parameters, and Kinematics of Open Clusters through Gaia data

[ Poster ]

Authors: Devesh P. Sariya1, Ing-Guey Jiang1, D. Bisht2, R. K.S. Yadav3, M. D. Sizova4, E. S. Postnikova4, N. Chupina4, S.V. Vereshchagin4, Geeta Rangwal51. Department of Physics and Institute of Astronomy, National Tsing-Hua University, Hsin-Chu, Taiwan2. Key Laboratory for Researches in Galaxies and Cosmology, Universityof Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China3. Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263129, India4. Institute of Astronomy Russian Academy of Sciences (INASAN), 48 Pyatnitskaya st., Moscow, Russia5. Center of Advanced Study, Department of Physics, D. S. B. Campus, Kumaun University Nainital 263002, India

We study a sample of open clusters from our Galaxy using Gaia data. Making use of the high precision of Gaia proper motions, we determined membership probability of stars in the regions of the studied clusters. The membership catalogues could successfully decontaminate cluster stars from field stars. The most likely cluster members were then used to determine parameters like radius, distance, age, metallicity, initial mass function and relaxation time for the clusters. Furthermore, Galactic orbits for the studied star clusters were also determined. The sample of star clusters, thus helps to understand the kinematics of the Galactic disk.