Teutsch 76: a Deep Near-Infrared Study

Abstract

We have performed a detailed analysis on the Teutsch 76 (T76) open cluster using the deep near-infrared (NIR) observations taken with the TANSPEC instrument mounted on the 3.6m Devasthal Optical Telescope (DOT) along with the recently available high quality proper motion data from the {\it Gaia} data release 3 and deep photometric data from Pan-STARRS1 survey. We have found that the T76 cluster is having a central density concentration with circular morphology, probably due to the star formation processes. The radius of the T76 cluster is found to be 45${}^{\prime }{}^{\prime }$ (1.24 pc) and 28 stars within this radius were marked as highly probable cluster members. We have found that the cluster is located at a distance of $5.7\pm 1.0$ kpc and is having an age of $50\pm 10$ Myr. The mass function slope ($\Gamma$) in the cluster region in the mass range $\sim$0.75$<$M/M${}_{\odot }$$<$5.8 is estimated as $-1.3\pm 0.2$, which is similar to the value `-1.35' given by \citet{1955ApJ...121..161S}. The cluster is not showing any signatures of mass-segregation and is currently undergoing dynamical relaxation.

arXiv commentAccepted for publication in Journal of Astrophysics and Astronomy

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Cited by in corpus (2)

• Long-term investigation of an open cluster Berkeley 65
• Pathway to Devasthal Astronomical Observatory, ARIES