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Dergiler / Physics and Astronomy Reports / 2026 / Volume: 3 Issue: 1

Comprehensive Analysis of Middle-Aged Open Cluster NGC 6793 in Vulpecula via Gaia DR3 Data

Seval Taşdemir(İstanbul University, Institute of Graduate Studies in Science, Programme of Astronomy and Space Sciences)0000-0003-1339-9148
Deniz Cennet Çınar(İstanbul University, Institute of Graduate Studies in Science, Programme of Astronomy and Space Sciences)
Remziye Canbay(İstanbul University, Faculty of Science, Department of Astronomy and Space Sciences)
Serkan Taştan(İstanbul University, Faculty of Science, Department of Astronomy and Space Sciences)0009-0009-3372-3663
W. H. Elsanhoury(Northern Border University, Department of Physics, College of Science)0000-0002-2298-4026
A. A. Haroon(King Abdulaziz University,Faculty of Science, Department of Astronomy and Space Science)0000-0002-8194-5836
Sayfa
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Yayın Tarihi
2025-06-24
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These results show the cluster’s stability and link to the thin disc population.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:We conducted an in-depth analysis of NGC 6793 open cluster via Gaia DR3 data, including astrometric, spectroscopic, and photometric measurements.
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Temel Bulgular & Veri:A selection of 147 stars, which show membership probabilities 𝑃 ≥ 0.5 were classified as likely members.
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Sonuç & Katkı:These results show the cluster’s stability and link to the thin disc population.
🔬Tür:Research Article
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Galaxy · open clusters and associations · individual

Abstract

We conducted an in-depth analysis of NGC 6793 open cluster via Gaia DR3 data, including astrometric, spectroscopic, and photometric measurements. A selection of 147 stars, which show membership probabilities 𝑃 ≥ 0.5 were classified as likely members. The mean trigonometric parallaxes and proper-motion components of the cluster were found to be 𝜛 = 1.674 ± 0.045 mas and (𝜇𝛼 cos 𝛿, 𝜇𝛿) =(3.814 ± 0.031, 3.547 ± 0.034) mas yr−1 . The fundamental astrophysical parameters of NGC 6793 are derived simultaneously as 𝑡 = 650 ± 50 Myr, 𝜇 = 9.508 ± 0.070 mag and 𝐸(𝐺BP − 𝐺RP) = 0.361 ± 0.035 mag. The cluster’s luminosity function shows the 𝐺-absolute magnitude limit of its main stars, indicating a clear stellar population. The cluster’s total mass, from the mass function with 𝑃 ≥ 0.5 stars, is estimated as 139 ± 12 𝑀/𝑀⊙. The slope of the MF was found to be Γ = 1.40±0.26, a result consistent with the Salpeter value. The kinematic analyses present velocity ellipsoid parameters as well as the convergent point (𝐴o, 𝐷o) = (85◦ .85 ± 0 ◦ .11, 3 ◦ .12 ± 0 ◦ .57). Analyses show that it is moving in a box-shaped orbit beyond the Sun’s galactic radius and belongs to the thin disk population of the Milky Way. The calculated relaxation time suggests that NGC 6793 has reached a dynamically relaxed state with the dynamical evolution parameter 𝜏 significantly exceeds one. These results show the cluster’s stability and link to the thin disc population.

🔖

Bu Makaleye Atıf Yap

Taşdemir, S., Çınar, D. C., Canbay, R., Taştan, S., Elsanhoury, W. H., Haroon, A. A. (2025). Comprehensive Analysis of Middle-Aged Open Cluster NGC 6793 in Vulpecula via Gaia DR3 Data. Physics and Astronomy Reports, Volume: 3 Issue: 1. https://doi.org/10.26650/PAR.2025.00003

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