African Astronomical Society conference and General Assembly 2025 (AfAS-2025)

Gaia (DR3)-based astronomical analysis of the seven unstudied open star clusters

Not scheduled

15m

Emperors Palace Hotel Casino Convention Resort

Poster

Speaker

Wageeh Ahmed Badawy (National Research Institute of Astronomy and Geophysics)

Description

The seven open star clusters FSR 0717, FSR 1698, Loden 2313, Ruprecht 49, Majaess 61, Mayer 2,
and Teutsch 48, which are located near the Milky Way’s Galactic plane are studied in this article using
the Gaia DR3 dataset. The estimated numbers of potential cluster members are 102, 362, 285, 197, 95,
116, 160, and 397, correspondingly. The calculated radius values are 3.10 ± 0.20, 3.20 ± 0.30, 5.10 ± 0.10,
5.30 ± 0.20, 4.50 ± 0.40, 3.50 ± 0.20, and 5.20 ± 0.20 arcmin, respectively. The clusters’ log ages of 8.80 ± 0.15,
7.80 ± 0.05, 6.95 ± 0.05, 8.00 ± 0.10, 8.70 ± 0.05, 7.95 ± 0.10, and 8.95 ± 0.05 yr are determined using solar
metallicity isochrones. The distances of 3176.76 ± 17.30, 2122.76 ± 14.35, 1157.07 ± 15.20, 3924.10 ± 20.10,
2513.21 ± 9.04, 3364.34 ± 8.01, and 3505.36 ± 7.93 pc that were obtained by the isochrone’s best fitting are
comparable to the distances determined by inverting median parallaxes. The slopes of the mass function are
matched the Salpeter mean value. Total masses are determined to be 128.55 ± 11, 548.30 ± 8, 254.57 ± 7,
194.09 ± 6, 92.32 ± 15, 191.50 ± 12, and 455.62 ± 10 𝑀⊙, respectively