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/

Zendy Plus

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

Zendy Tools

Zendy Open

The fundamental parameters of reddening, metallicity, age, and distance arepresented for the poorly studied open clusters Be~89, Ru~135, and Be~10,derived from their CCD UBVRI photometry. By fitting the appropriate isochronesto the observed sequences of the clusters in five different color--magnitudediagrams, the weighted averages of distance moduli and heliocentric distances($(V_0$--$M_{V}), d$(kpc)) are $(11\fm90\pm 0\fm06, 2.4\pm 0.06$) for Be~89,$(9\fm58\pm 0\fm07, 0.81\pm 0.03$) for Ru~135, and $(11\fm16\pm 0\fm06, 1.7 \pm0.05$) for Be~10, and the weighted averages of the ages $(\log(A), A$(Gyr)) are$(9.58\pm 0.06, 3.8\pm 0.6)$ for Be~89, $(9.58\pm 0.06, 3.8\pm 0.7)$ forRu~135, and $(9.06\pm 0.05, 1.08\pm 0.08)$ for Be~10.

CCD UBVRI Photometry of the Galactic open clusters: Be~89, Ru~135, and Be~10