使用gaia dr3对9个未被研究的疏散星团进行天体物理学研究

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Revista Mexicana de Astronomia y Astrofisica Pub Date : 2023-10-01 DOI:10.22201/ia.01851101p.2023.59.02.01
W. A. Badawy, A. L. Tadross, Y. H. M. Hendy, M. N. Ismail, A. Mouner
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引用次数: 0

摘要

利用盖亚DR3的数据集,这项工作给出了9个疏散星团的分析:Dolidze 25、Kronberger 13、Kronberger 18、Majaess 99、NGC 7795、Ruprecht 139、Teutsch 55、S1和FSR 0596,它们靠近银河系的银道面。可能的星团成员数分别为81、77、120、155、108、110、160和116。半径分别确定为5.40、5.25、4.80、4.20、4.28、3.70、4.30、4.30和3.53 arcmin。利用太阳金属丰度等时线测定了这些星团的年龄分别为7.70、9.00、8.35、7.50、9.00、8.00、7.50、8.50和9.5年。等时线的最佳拟合得到的距离分别为2.6、1.27、1.16、1.16、3.10、1.64、2.50、2.44和0.98 kpc,与反演中位视差计算得到的距离相似。质量函数斜率与Salpeter值一致。总质量的结果是116.07、79.33、141.24、147.34、145.76、491.01、155、212.46和82.79 M☉。
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ASTROPHYSICAL STUDIES OF 9 UNSTUDIED OPEN STAR CLUSTERS USING GAIA DR3
Using the Gaia DR3 data sets, this work gives an analysis of nine open clusters: Dolidze 25, Kronberger 13, Kronberger 18, Majaess 99, NGC 7795, Ruprecht 139, Teutsch 55, S1, and FSR 0596, which are close to the Galactic plane of the Milky Way. The number of probable cluster members is found to be 81, 77, 120, 155, 108, 110, 160, and 116 respectively. Radii are determined as 5.40, 5.25, 4.80, 4.20, 4.28, 3.70, 4.30, 4.30, and 3.53 arcmin, respectively. With solar metallicity isochrones log ages of 7.70, 9.00, 8.35, 7.50, 9.00, 8.00, 7.50, 8.50, and 9.5 yr are determined for these clusters. The best fitting of the isochrone produced distances of 2.6, 1.27, 1.16, 1.16, 3.10, 1.64, 2.50, 2.44, and 0.98 kpc that are similar to the distances calculated from inverting median parallaxes. The mass function slopes are in agreement with the Salpeter value. The results of the total masses are found to be 116.07, 79.33, 141.24, 147.34, 145.76, 491.01, 155, 212.46, and 82.79 M☉.
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来源期刊
Revista Mexicana de Astronomia y Astrofisica
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
14
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.
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