A Gaia based photometric and kinematic analysis of the old open cluster King 11
| Autor: | Geeta Rangwal, Devesh P. Sariya, N. V. Chupina, D. Bisht, R. K. S. Yadav, Ing-Guey Jiang, M. D. Sizova, S. V. Vereshchagin |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Stellar kinematics Proper motion Hertzsprung–Russell diagram FOS: Physical sciences Astronomy and Astrophysics Astrophysics Radius Astrophysics - Astrophysics of Galaxies Blue straggler Galaxy Stars symbols.namesake Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) symbols Solar and Stellar Astrophysics (astro-ph.SR) Open cluster |
| Popis: | This paper presents an investigation of an old age open cluster King 11 using Gaia's Early Data Release 3 (EDR3) data. Considering the stars with membership probability ($P_{\mu}$) $> 90\%$, we identified 676 most probable cluster members within the cluster's limiting radius. The mean proper motion (PM) for King 11 is determined as: $\mu_{x}=-3.391\pm0.006$ and $\mu_{y}=-0.660\pm0.004$ mas yr$^{-1}$. The blue straggler stars (BSS) of King 11 show a centrally concentrated radial distribution. The values of limiting radius, age, and distance are determined as 18.51 arcmin, 3.63$\pm$0.42 Gyr and $3.33\pm0.15$ kpc, respectively. The cluster's apex coordinates ($A=267.84^{\circ} \pm 1.01^{\circ}$, $D=-27.48^{\circ} \pm 1.03^{\circ}$) are determined using the apex diagram (AD) method and verified using the ($\mu_U$,$\mu_T$) diagram. We also obtained the orbit that the cluster follows in the Galaxy and estimated its tentative birthplace in the disk. The resulting spatial velocity of King 11 is 60.2 $\pm$ 2.16 km s$^{-1}$. A significant oscillation along the $Z$-coordinate up to 0.556$\pm$0.022~kpc is determined. |
| Databáze: | OpenAIRE |
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