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 along with the recently available high quality proper motion data from the 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 (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 ± 1.0 kpc and is having an age
of 50 ± 10 Myr. The mass function slope ( ) in the cluster region in the mass range of ∼0.75 < M/M < 5.8
is estimated as −1.3 ± 0.2, which is similar to the value of −1.35 given by Salpeter (1955). The cluster is not
showing any signatures of mass-segregation and is currently undergoing dynamical relaxation.
Star cluster—star formation—stellar evolution
