Photometry of three open star clusters: Juchert-Saloranta 1, Teutsch 1 and Teutsch 5

Abstract

We present a photometric study for three rarely studied open star clusters; Juchert-Saloranta 1, Teutsch 1 and Teutsch 5 using the 2MASS-JHKs photometric data. Their structural and photometric parameters are determined. We obtained the distance from the Sun of 3.30 ± 0.30 kpc, 3.82 ± 0.25 kpc and 2.91 ± 0.34 kpc and their log(age) of 9.15, 8.75 and 8.9 at solar metallicity and the total mass of 215, 807 and 165 M for Juchert-Saloranta 1, Teutsch 1 and Teutsch 5 respectively. The three clusters lie in the galactic plane and about 11 kpc from the galactic center. The relaxation times of the clusters are smaller than the estimated cluster ages (∼ 0.01) that may be reflect the dynamical relaxation of these clusters.

Gaia photometric and kinematics studies of fouropen star clusters: King 13, Juchert-Saloranta 1,Teutsch 1, and Teutsch 5

“…For cluster Juchert-Saloranta 1, we can see a convergence of results between this study and other research. We found the C value for clusters: Juchert-Saloranta 1, Teutsch 1, Teutsch 5 in the range (0.92-1.12) which is in fair agreement with Ismail et al (2015). Table 3 contains…”

“…Nevertheless, a high difference in the r cl values. In two clusters: Teutsch 1, Teutsch 5; the r cl values are smaller than the computed values from Ismail et al (2015).…”

“…In addition, Bukowiecki et al (2011) and Haroon et al (2014) determined its distances of 2.968±0.190 Kpc, 2.11±0.25 Kpc, and ages 0.794 Gyr, 1.00±0.12 Gyr, respectively. Finally, In the Ismail et al (2015) determined that the distance is 2.64±0.34 Kpc, and the age is 1.00±0.115 Gyr. The two photometric studies of the open cluster Juchert-Saloranta 1 were executed by Bukowiecki et al (2011) and Ismail et al (2015) obtained JHKs photometry determined its distance of 3.894±0.266 Kpc, 3.30±0.30 Kpc, and its age of 1.112 Gyr, 1.412±0.162 Gyr, respectively.…”

“…Finally, In the Ismail et al (2015) determined that the distance is 2.64±0.34 Kpc, and the age is 1.00±0.115 Gyr. The two photometric studies of the open cluster Juchert-Saloranta 1 were executed by Bukowiecki et al (2011) and Ismail et al (2015) obtained JHKs photometry determined its distance of 3.894±0.266 Kpc, 3.30±0.30 Kpc, and its age of 1.112 Gyr, 1.412±0.162 Gyr, respectively. Kronberger et al (2006) determined its angular diameter as 5.0arcmin.…”

“…The open cluster Teutsch 1, Kronberger et al (2006) determined its angular diameter of 2.0arcmin. The photometric studies of this cluster have been executed by Koposov et al (2008) and Ismail et al (2015) obtained JHKs photometry determined its distance of 3.700±0.900 Kpc, 3.82±2.50 Kpc and ages <0.446 Gyr, 0.562±0.065 Gyr, respectively. The open cluster Teutsch 5 Kronberger et al (2006) determined its angular diameter of 3.2 arcmin.…”