CCD UBV RI photometry of the open cluster Berkeley 8

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Turkish Journal of Physics
Volume:43 Issue:5
CCD UBV RI photometry of the open cluster Berkeley 8

CCD UBV RI photometry of the open cluster Berkeley 8

Authors : Hikmet ÇAKMAK, Raul MICHEL, Yüksel KARATAŞ

Pages : 516-530

View : 24 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The poorly studied Berkeley 8 insert ignore into journalissuearticles values(Be 8); open cluster is analyzed from CCD U BV RI photometric data taken with the 0.90 m telescope at the Sierra Nevada Observatory. The Z = +0.008 PARSEC isochrone gave us a reddening of Einsert ignore into journalissuearticles values(B-V); = 0.69 ± 0.03, a distance of 3410 ± 300 pc, and an age of 2.8 ± 0.2 Gyr. Its median Gaia DR2 distance, d = 3676 ± 810 pc, is in good agreement with our photometric distances, 3410-3620 pc within the uncertainties. The kinematic parameters of five likely members of Be 8 with the circular orbits, ecc = [0.23, 0.30] , reflect the properties of the Galactic thin disc, which is also consistent with what is expected of its metal content insert ignore into journalissuearticles values([M/H] = -0.27);. Be 8 with R > 9 kpc insert ignore into journalissuearticles values(co-rotation gap at 9 kpc); may have been originating from a different galactic radius or different star formation region.
Keywords : Galaxy, open clusters and associations, abundances, evolution

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