利用GAIA时代和恒星光度函数对某些疏散星团的星等分析确定距离

IF 0.4 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Contributions of the Astronomical Observatory Skalnate Pleso Pub Date : 2022-04-01 DOI:10.31577/caosp.2022.52.1.32

W. Elsanhoury, A. Al‐Johani, Noha H. El Fewaty, A. Haroon

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引用次数: 0

摘要

．在这项工作中，我们利用距离方程，提供了一些基本的视星等和绝对星等的描述性统计数据，一些疏散星团(即毕宿星团、昴宿星团、IC 2391、Koposov 12、Koposov 43、NGC 1348、NGC 2112、NGC 4337、SAI 24和SAI 94)的距离，假设所有成员N都在高斯分布的平均绝对星等周围散射。我们的数值计算结果与先前的计算值吻合得很好。在论文的第二部分，我们利用频率分布函数Φ(M V)的Salpeter归一化函数Ψ(M V)计算了Hyades疏散星团的光度函数，由此得到了它们与绝对星等M V之间非常显著的关系(即线性相关系数~ 0.995)，并给出了误差分析。

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Distance determination by magnitude analysis of some open clusters with GAIA era and stellar luminosity function

. In this work, we carry out by utilizing the distance equation with providing some basic descriptive statistics for both apparent and absolute magnitudes, the distances of some open clusters (i.e., Hyades, Pleiades, IC 2391, Koposov 12, Koposov 43, NGC 1348, NGC 2112, NGC 4337, SAI 24, and SAI 94) with the assumption that all members N are scattering around a mean absolute magnitude in a Gaussian distribution. Our numerical obtained results are in good agreement with previously calculated values. In the second part of the paper, we have calculated the luminosity function of Hyades open cluster by Salpeter’s normalized function Ψ( M V ) due to frequency distribution function Φ( M V ), on this way, we have got a very signiﬁcant relationship between them with absolute magnitudes M V (i.e., the linear correlation coeﬃcient ∼ 0.995), and the error analysis are also given.

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来源期刊

Contributions of the Astronomical Observatory Skalnate Pleso 地学天文-天文与天体物理

CiteScore

1.10

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： Contributions of the Astronomical Observatory Skalnate Pleso" (CAOSP) is published by the Astronomical Institute of the Slovak Academy of Sciences (SAS). The journal publishes new results of astronomical and astrophysical research, preferentially covering the fields of Interplanetary Matter, Stellar Astrophysics and Solar Physics. We publish regular papers, expert comments and review contributions.