Deeply comprehensive astrometric, photometric, and kinematic studies of the three OCSN open clusters with Gaia DR3

被引:0
作者
Elsanhoury, W. H. [1 ]
Haroon, A. A. [2 ]
Elkholy, E. A. [1 ,3 ]
Cinar, D. C. [4 ]
机构
[1] Northern Border Univ, Coll Sci, Dept Phys, Ar Ar, Saudi Arabia
[2] King Abdulaziz Univ, Fac Sci, Astron & Space Sci Dept, Jeddah, Saudi Arabia
[3] Natl Res Inst Astron & Geophys NRIAG, Astron Dept, Helwan 11421, Cairo, Egypt
[4] Istanbul Univ, Inst Grad Studies Sci, Programme Astron & Space Sci, TR-34116 Istanbul, Turkiye
关键词
Star clusters: OCSN clusters; astrometric; color magnitude diagrams; photometric; kinematics; orbit parameters; STAR-CLUSTERS; MASS FUNCTION; RADIAL-VELOCITIES; CONVERGENT POINT; PROPER MOTIONS; GALAH SURVEY; YOUNG; FIELD; PARAMETERS; EVOLUTION;
D O I
10.1007/s12036-025-10044-0
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this study, we considered the optical wavelength of Gaia Data Release 3 (DR3) to analyze poorly studied three newly open star clusters, namely OCSN 203, OCSN 213, and OCSN 244 clusters with ASteCA code. Here, we identified 227, 200, and 551 candidates with highly probable (P >= 50%) members. Fitting King's profile within radial density profiles allows us to estimate inner stellar structures like core (0.190 <= r(c) (pc)<= 1.284) and the limiting (0.327 <= r(cl) (pc)<= 1.302) radii. Constructing color-magnitude diagrams (CMDs) fitted with suitable log age (yr) between (log t; 6.52-7.05) and metallicities (Z; 0.01308-0.01413) isochrones. Therefore, the estimated photometric parameters with CMDs reflect the heliocentric distances are 332 +/- 18, 529 +/- 23, and 506 +/- 23 (pc) for OCSN 203, OCSN 213, and OCSN 244, respectively. Furthermore, the collective mass (MC) in solar mass units is calculated with MLR as 67 +/- 8.19, 91 +/- 9.54, and 353 +/- 18.79. Additionally, LF determined that the mean absolute magnitudes are 9.54 +/- 3.09, 8.52 +/- 2.92, and 7.60 +/- 2.76 for these clusters, respectively. The overall mass function reflects the slopes (alpha) for Salpeter within the uncertainty are (alpha OCSN 203=2.41 +/- 0.06), (alpha OCSN 213=2.13 +/- 0.07), and (alpha OCSN 244=2.28 +/- 0.07). The results of this study, which employed a dynamical analysis over varying timescales, indicate that OCSN 203 and OCSN 244 are clusters that have undergone significant relaxation, with a dynamical evolution parameter (tau) that is much greater than one. In contrast, OCSN 213 exhibits characteristics of a non-relaxed cluster. A kinematic analysis of these open clusters was carried out, encompassing aspects of their apex position (Ao,Do) using the AD diagrams. Therefore, the numerical convergent point coordinates are 76(degrees).77 +/- 0(degrees).01, -0(degrees).23 +/- 0(degrees).00 (OCSN 203), 85(degrees).71 +/- 0(degrees).11, -9(degrees).63 +/- 0(degrees).03 (OCSN 213), and 88(degrees).19 +/- 0(degrees).11, -4(degrees).04 +/- 0(degrees).01 (OCSN 244). We found that the three OCSN clusters are young stellar disc members using dynamic orbit parameters.
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页数:17
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