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 (43)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Gaia Data Release 2. Summary of the contents and survey properties
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Embedded Clusters in Molecular Clouds
• The USNO-B Catalog
• Color Transformations for the 2MASS Second Incremental Data Release
• A new generation of PARSEC-COLIBRI stellar isochrones including the TP-AGB phase
• The PPMXL catalog of positions and proper motions on the ICRS. Combining USNO-B1.0 and 2MASS
• Gaia Data Release 2: Photometric content and validation
• Global survey of star clusters in the Milky Way II. The catalogue of basic parameters
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• The Time Scale of Escape from Star Clusters
• The GALAH survey and Gaia DR2: dissecting the stellar disc's phase space by age, action, chemistry and location
• Modes of Multiple Star Formation
• Low-extinction windows in the inner Galactic Bulge
• A deep all-sky census of the Hyades
• Galactic rotation in Gaia DR1
• CCD BV survey of 42 open clusters
• Revised Gaia Data Release 2 passbands
• Structure and mass segregation in Galactic stellar clusters
• The nature of the young and low-mass open clusters Pismis5, vdB80, NGC1931 and BDSB96
• 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
• Automated search for star clusters in large multiband surveys: II. Discovery and investigation of open clusters in the Galactic plane
• Astrometric and photometric study of NGC 6067, NGC 2506 and IC 4651 open clusters based on wide-field ground and Gaia DR2 data
• Extended stellar systems in the solar neighborhood - III. Like ships in the night: the Coma Berenices neighbor moving group
• A catalog of 120 NGC open star clusters
• Mass function and dynamical study of the open clusters Berkeley 24 and Czernik 27
• 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
• The Pleiades apex and its kinematical structure
• A High-Resolution Multiband Survey of Westerlund 2 With the Hubble Space Telescope. III. The present-day stellar mass function
• Constructing a Galactic coordinate system based on near-infrared and radio catalogs
• 2MASS photometry and kinematical studies of open cluster NGC 188
• The kinematical and space structures of IC 2391 open cluster and moving group with Gaia-DR2
• A comprehensive photometric study of dynamically evolved small van den Bergh-Hagen open clusters
• The open cluster Berkeley 53
• Kinematics and Velocity Ellipsoid of Halo Red Giants
• PPMXL and Gaia Morphological Analysis of Melotte 22 (Pleaides) and 25 (Hyades)
• PPMXL photometric study of four open cluster candidates (Ivanov 2, Ivanov 7, Ivanov 9 and Harvard 9)