Abstract Details
| Name: KHUSHBOO KUNWARRAO Affiliation: BITS, Pilani Conference ID: ASI2019_214 Title : A Gaia DR2 Study of Selected Open Clusters Authors and Co-Authors : Khushboo Kunwar Rao, Research Scholar,Department of Physics, Birla Institute of Technology and Science Pilani,Pilani Campus. Dr. Kaushar Vaidya, Assistant Professor, Department of Physics, Birla Institute of Technology and Science Pilani,Pilani Campus. Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : We characterize the stellar populations of seven rich but relatively poorly studied open clusters, located at distances 900-2600 pc using the Gaia DR2 data. The unprecedented precision of the Gaia DR2 proper motions and parallaxes, when possible combined with the radial velocity information available in the literature, allows for secure membership determination for the stars in clusters. We report our estimate of the fundamental cluster parameters such as the age, distance, and the metallicity. The numbers of identified members in these clusters range approximately from 200 to 950. A distinct equal-mass binary sequence is visible in each of these cluster's color-magnitude diagrams. The fraction of these binary systems range from 10-15%. Five of these clusters also show a number of blue stragglers. We study the mass-luminosity functions of these clusters. We examine the signatures of dynamical evolution in these clusters, such as the mass segregation, tidal stripping of the lower-mass stellar populations if any, radial distribution of the binary systems, and the blue stragglers, as compared to the reference population such as the red-giant branch. |