Photometric and kinematical analysis of Koposov 12 and Koposov 43 open clusters

Abstract

We present a photometric and kinematical analysis of two and poorly studied open clusters; Koposov 12 (FSR 802) and Koposov 43 (FSR 848) by using cross-matched data from PPMXL and Gaia DR2 catalog. We use astrometric parameters to identify 285 and 310 cluster members for Koposov 12 and Koposov 43, respectively. Using the extracted member candidates and isochrone fitting to near-infrared (J, H, Ks) and Gaia DR2 bands (G, GBP, GRP), and Color Magnitude Diagrams (CMDs), we have estimated ages: log (age/yr) = 9.00 +/- 0.20 and 9.50 +/- 0.20, and distances d = 1850 +/- 43 pc and 2500 +/- 50 pc for Koposov 12 and Koposov 43, respectively, assuming Solar metallicity (Z=0.019). The estimated masses of the cluster derived using initial mass function and synthetic CMD are 364 +/- 19 M_sun and 352 +/- 19 M_sun. We have also computed their velocity ellipsoid parameters based on (3x3) matrix elements (mu_ij).

References in corpus (14)

• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• CCD BV survey of 42 open clusters
• Structure and mass segregation in Galactic stellar clusters
• A Multi-Membership Catalogue for 1876 Open Clusters using UCAC4 data
• Praesepe (NGC 2632) and its tidal tails
• Automated search for galactic star clusters in large multiband surveys: I. Discovery of 15 new open clusters in the Galactic anticenter region
• Extended stellar systems in the solar neighborhood - III. Like ships in the night: the Coma Berenices neighbor moving group
• A Comprehensive study of open clusters Czernik 14, Haffner 14, Haffner 17 and King 10 using multicolour photometry and Gaia DR2 astrometry
• Photometric, kinematic and variability study in the young open cluster NGC 1960
• An investigation of poorly studied open cluster NGC 4337 using multi-color photometric and Gaia DR2 astrometric data
• A High-Resolution Multiband Survey of Westerlund 2 With the Hubble Space Telescope. III. The present-day stellar mass function
• A comprehensive photometric study of dynamically evolved small van den Bergh-Hagen open clusters
• The open cluster Berkeley 53
• PPMXL photometric study of four open cluster candidates (Ivanov 2, Ivanov 7, Ivanov 9 and Harvard 9)