利用CCD-UBV光度和GAIA-EDR3数据研究ngc1193和ngc1798开放团簇

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Revista Mexicana de Astronomia y Astrofisica Pub Date : 2022-07-13 DOI:10.22201/ia.01851101p.2022.58.02.14

T. Yontan, Hikmet C¸akmak, S. Bilir, T. Banks, Michel Ra´ul, R. Canbay, Seliz Ko¸c, Seval Ta¸sdemir, H¨ulya Er¸cay, Bur¸cin Tanık ¨Ozt¨urk, Deniz Cennet Dursun

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引用次数: 2

摘要

我们介绍了古老的疏散星团NGC 1193和NGC 1798的光度、天体测量和运动学研究。这两个星团都是通过结合盖亚早期数据发布3（EDR3）和CCD UBV观测数据的数据集进行研究的。通过使用双色图，推导出NGC 1193的E（B−V）过色为0.150±0.037，NGC 1798的E（B−V）超色为0.505±0.100 mag。光度金属性也由双色图确定，结果为NGC 1193的[Fe/H]=−0.30±0.06 dex，NGC 1798的[Fe/H]=−0.20±0.07 dex。NGC 1193的等时线拟合距离和年龄分别为5562±381pc和4.6±1Gyr。对于NGC 1798来说，这些参数分别为4451±728pc和1.3±0.2Gyr。运动学和动力学轨道计算表明，NGC 1193和NGC 1798分别属于厚盘和薄盘种群。

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A STUDY OF THE NGC 1193 AND NGC 1798 OPEN CLUSTERS USING CCD UBV PHOTOMETRIC AND GAIA EDR3 DATA

We present photometric, astrometric, and kinematic studies of the old open star clusters NGC 1193 and NGC 1798. Both of the clusters are investigated by combining data sets from Gaia Early Data Release 3 (EDR3) and CCD UBV observational data. E(B − V ) color excesses are derived for NGC 1193 as 0.150 ± 0.037 and for NGC 1798 as 0.505 ± 0.100 mag through the use of two-color diagrams. Photometric metallicities are also determined from two-color diagrams with the results of [Fe/H]=−0.30 ± 0.06 dex for NGC 1193 and [Fe/H]=−0.20 ± 0.07 dex for NGC 1798. The isochrone fitting distance and age of NGC 1193 are 5562 ± 381 pc and 4.6±1 Gyr, respectively. For NGC 1798, these parameters are 4451±728 pc and 1.3±0.2 Gyr. Kinematic and dynamic orbital calculations indicate that NGC 1193 and NGC 1798 belong to the thick-disk and thin-disk populations, respectively.

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来源期刊

Revista Mexicana de Astronomia y Astrofisica 地学天文-天文与天体物理

CiteScore

1.30

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Astronomía y Astrofísica, founded in 1974, publishes original research papers in all branches of astronomy, astrophysics and closely related fields. Two numbers per year are issued and are distributed free of charge to all institutions engaged in the fields covered by the RMxAA.