利用gaia edr3数据确定了疏散星团格列佛18和格列佛58的主要天体物理参数

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

Revista Mexicana de Astronomia y Astrofisica Pub Date : 2022-08-05 DOI:10.22201/ia.01851101p.2022.58.02.17

A. Tadross, Eslam G. Elhosseiny

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引用次数: 1

摘要

利用盖亚空间天文台（Gaia-EDR3）第三次发布的早期数据，首次对古力弗18和古力弗58这两个疏散星团进行了光度和天体测量研究。通过研究这两个星团的自身运动、视差和色量图，我们确定了它们的实际星团成员关系。因此，可以确定星团的年龄、颜色过度和日心距离。还估算了古力弗18和古力弗58的光度函数、质量函数、总质量、质量偏析和弛豫时间。

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THE PRINCIPAL ASTROPHYSICAL PARAMETERS OF THE OPEN CLUSTERS GULLIVER 18 AND GULLIVER 58 DETERMINED USING GAIA EDR3 DATA

A photometric and astrometric study of the two open star clusters Gulliver18 and Gulliver58 was carried out for the first time using the early third data release of the Gaia space observatory (Gaia-EDR3). By studying the proper motions, parallaxes, and color-magnitude diagrams of the two clusters, we determined their actual cluster membership. Therefore, ages, color excesses, and heliocentric distances of the clusters could be determined. The luminosity function, mass function, total mass, mass segregation, and relaxation time of Gulliver18 and Gulliver58 were estimated as well.

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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.