A Photometric and Astrometric Study of Open Star Clusters FSR-163 and Majaess 215 Using Gaia DR3

被引：0
|
作者：
Ali, Ola [1 ]
Tadross, A. L. [1 ]
Osman, A. I. [1 ]
Hayman, Z. M. [2 ]
机构：
[1] Natl Res Inst Astron & Geophys, Astron Dept, Cairo 11421, Helwan, Egypt
[2] Cairo Univ, Fac Sci, Astron Dept, Giza 12613, Egypt
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2024年 / 24卷 / 12期
关键词：
(Galaxy:) open clusters and associations: individual (FSR-163 and Majaess 215); proper motions; stars: luminosity function; mass function; catalogs; Astronomical Databases; STELLAR EVOLUTION; CCD UBV; CATALOG; SYSTEMS; TRACKS;
D O I：
10.1088/1674-4527/ad8a08
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have examined most of the astrophysical properties of the two star clusters, FSR-163 and Majaess 215, using the third data release of the Gaia space mission (Gaia DR3). We utilized the pyUPMASK method to allocate the probabilities of stars' membership candidates. Using the clusters' trigonometric parallaxes of the members with probabilities P > 50%, we calculated the distance to the clusters of 3290 (+/- 140) and 2833 (+/- 140) pc, respectively, which match well with our isochrone fitting results on the color-magnitude diagrams. We determined the age of the clusters, and they are 1.00 (+/- 0.15) and 3.55 (+/- 0.15) Gyr for FSR-163 and Majaess 215, respectively. We evaluated the following photometric parameters: reddenings, distances, galactic geometrical distances, luminosity-mass functions, and total masses of the two clusters. On studying the dynamic state of the two clusters, we found that Majaess 215 is more relaxed than FSR-163.
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页数：10
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