English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present UBVRcIc photometric study of three intermediate age open starclusters NGC 381, NGC 2360, and Berkeley 68 (Be 68). We examine the clustermembership of stars using recently released Gaia DR2 proper motions and obtaina total of 116, 332, and 264 member stars in these three clusters. The meanreddening of E(B - V) = 0.36+/-0.04, 0.08+/-0.03, and 0.52+/-0.04 mag are foundin the direction of these clusters where we observe an anomalous reddeningtowards NGC 381. We fitted the solar metallicity isochrones to determine ageand distance of the clusters which are found to be log(Age) = 8.65+/-0.05,8.95+/-0.05, and 9.25+/-0.05 yr with the respective distance of 957+/-152,982+/-132, and 2554+/-387 pc for the clusters NGC 381, NGC 2360, and Be 68. Atwo-stage power law in the mass function (MF) slope is observed in the clusterNGC 381, however, we observe only a single MF slope in the clusters NGC 2360and Be68. To study a possible spatial variation in the slope of MF we estimateslopes separately in the inner and the outer regions of these clusters andnotice a steeper slope in outer region. The dynamic study of these clustersreveals deficiency of low-mass stars in their inner regions suggesting the masssegregation process in all these clusters. The relaxation times of 48.5, 78.9,and 87.6 Myr are obtained for the clusters NGC 381, NGC 2360, and Be 68,respectively which are well below to their respective ages. This suggests thatall the clusters are dynamically relaxed.

Photometric and Kinematic study of the three intermediate age open clusters NGC 381, NGC 2360, and Berkeley 68