A deep study of an intermediate age open cluster SAI 35 (Juchert 20) using ground based imaging and Gaia EDR3 astrometry
| Autor: | Devesh P. Sariya, Geeta Rangwal, Rakesh Yadav, D. Bisht, Alok Durgapal, Qingfeng Zhu, Ing-Guey Jiang |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Orbital elements Proper motion Initial mass function 010504 meteorology & atmospheric sciences Galactic Center FOS: Physical sciences Astronomy and Astrophysics Astrometry Astrophysics 01 natural sciences Astrophysics - Astrophysics of Galaxies Radial velocity Stars Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences 010303 astronomy & astrophysics 0105 earth and related environmental sciences Open cluster |
| Popis: | We present CCD $UBVI$ photometric study of poorly studied intermediate age open cluster SAI 35 (Juchert 20) for the first time. To accomplish this study, we also used LAMOST DR5, 2MASS, and Gaia EDR3 databases. We identified 214 most probable cluster members with membership probability higher than 50%. The mean proper motion of the cluster is found as \mu_{\alpha}cos\delta=1.10 \pm 0.01 and \mu_{\delta}=-1.66 \pm 0.01 mas/yr. We find the normal interstellar extinction law using the various two-color diagrams. The age, distance, reddening, and radial velocity of the cluster are estimated to be 360 \pm 40 Myr, 2.9 \pm 0.15 kpc, 0.72 \pm 0.05 mag and -91.62 \pm 6.39 km/sec. The overall mass function slope for main-sequence stars is found to be 1.49\pm0.16 within the mass range 1.1-3.1 M_\odot, which is in agreement with Salpeter's value within uncertainty. The present study demonstrates that SAI 35 is a dynamically relaxed. Galactic orbital parameters are determined using Galactic potential models. We found that this object follows a circular path around the Galactic center. Comment: 23 figures, 9 tables, This manuscript is accepted for publication in Astronomical journal |
| Databáze: | OpenAIRE |
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