Astrophysical parameters of 14 open clusters projected close to the Galactic plane

TL;DR

This study derives astrophysical parameters for 14 open clusters near the Galactic plane using 2MASS data, providing new insights into their distances, ages, and sizes, with some clusters studied in more detail than before.

Contribution

It presents the first detailed parameter estimates for several clusters and refines data for others, expanding knowledge of their properties and distribution.

Findings

Clusters are located at 1.6-7.1 kpc from the Sun.

Ages range from 10 Myr to 1.5 Gyr.

Core radii range from 0.27 to 1.88 pc.

Abstract

Astrophysical parameters (\textit{age, reddening, distance, core and cluster radii}) of 14 open clusters (OCs) projected close to the Galactic plane are derived with 2MASS photometry. The OCs are Be 63, Be 84, Cz 6, Cz 7, Cz 12, Ru 141, Ru 144, Ru 172, FSR 101, FSR 1430, FSR 1471, FSR 162, FSR 178 and FSR 198. The OCs Be 63, Be 84, Ru 141, Ru 144, and Ru 172 are studied in more detail than in previous works, while the others have astrophysical parameters derived for the first time. The open clusters of the sample are located at $d_\odot=1.6-7.1$ kpc from the Sun and at Galactocentric distances $5.5-11.8$ kpc, with age in the range 10 Myr to 1.5 Gyr and reddening $E(B-V)$ in the range $0.19-2.56$ mag. The core and cluster radii are in the range $0.27-1.88$ pc and $2.2-11.27$ pc, respectively. Cz 6 and FSR 198 are the youngest OCs of this sample, with a population of pre-main sequence (PMS) stars, while FSR 178 is the oldest cluster.