Abstract Details
| Name: Jayanand Maurya Affiliation: ARIES, Nainital Conference ID: ASI2019_401 Title : Astrometric and photometric study of open clusters NGC 381 and King 21 using ground based and archived Gaia DR2 data Authors and Co-Authors : Jayanand Maurya Abstract Type : Poster Abstract Category : Stars, ISM and Galaxy Abstract : The study of open star clusters is important to understand star formation process in the Galaxy. A precise knowledge of cluster parameters such as age, distance, chemical composition as well as stellar population distribution and cluster mass function at the time of star formation play a key role in understanding the star formation history. At ARIES, Nainital, we have been carrying out a long-term observational programme to search and characterize the variable stars in some poorly studied open star clusters. A UBVRI photometric study and Gaia DR2 kinematic study of two such open clusters NGC 381 and King 21 is presented here which has been carried out using the observations taken from 1.3-m DFOT telescope at Devasthal, Nainital and space born GAIA telescope. By deriving the stellar membership probabilities of the stars in the cluster fields, we identify the probable cluster members in order to determine the most accurate cluster parameters. To estimate the physical cluster parameters like distance, age, and reddening of the clusters, we used stellar isochrones fitting method in the observed (B − V)/V and (V − I)/V CMDs, and TCDs. We derived the luminosity functions and the mass functions for both the clusters. I will discuss the results of our survey which were derived through the photometric data taken at Nainital along with the archival 2MASS and GAIA surveys. |