CCD UBV(RI)KC photometry of the open clusters Juchert 9 and Berkeley 97

被引：2
作者：
Oralhan, Inci Akkaya [1 ]
Michel, Raul [2 ]
Karsli, Yonca [1 ]
Cakmak, Hikmet [3 ]
Sung, Hwankyung [4 ]
Karatas, Yuksel [3 ]
机构：
[1] Erciyes Univ, Sci Fac, Dept Astron & Space Sci, TR-38039 Kayseri, Turkey
[2] Univ Nacl Autonoma Mexico, Observ Astron Naciona, Apartado Postal 877, Ensenada 22800, Baja California, Mexico
[3] Istanbul Univ, Sci Fac, Dept Astron & Space Sci, TR-34116 Istanbul, Turkey
[4] Sejong Univ, Dept Phys & Astron, 209 Neungdong Ro, Seoul 05006, South Korea
来源：
ASTRONOMISCHE NACHRICHTEN | 2020年 / 341卷 / 01期
基金：
新加坡国家研究基金会; 美国国家科学基金会;
关键词：
(galaxy; ) open clusters and associations; Individual Juc 9 and be 97; galaxy; Abundances; Evolution; THEORETICAL ISOCHRONES; STAR-CLUSTERS; EVOLUTION; WASHINGTON; TRACKS;
D O I：
10.1002/asna.202013647
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The CCD UBV(RI)(KC) photometry of the poorly studied open clusters Juchert 9 (Juc 9) and Berkeley 97 (Be 97), which are observed with the 0.84 m telescope at the San Pedro Martir National Observatory, Mexico has been analyzed. For the likely cluster members, we determined the reddenings, E(B-V) = 0.82 +/- 0.04 (Juc 9) and E(B-V) = 0.87 +/- 0.05 (Be 97), from the early type stars. Our distance moduli/distances for only (B - V) color are (V-0-M-V,M- d[kpc]) = (13.40 +/- 0.10, 4.8 +/- 0.2 kpc) (Juc 9) and (12.40 +/- 0.12, 3.0 +/- 0.2 kpc) (Be 97), respectively. The Gaia DR2 distances are d = 4.5 +/- 1.2 kpc (Juc 9) and d = 3.1 +/- 0.7 kpc (Be 97) from the median parallaxes with sigma(& x3d6;)/& x3d6; < 0.20, which are in good agreement with the photometric distances within the uncertainties. The solar abundance PARSEC isochrones give us the intermediate ages, 30 +/- 10 Myr for Juc 9 and 100 +/- 30 Myr for Be 97.
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页码：44 / 55
页数：12
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