Photometric studies of open clusters:
 Be 95, Cze 21, Cze 38, Ju 11, King 17, and King 18


Berkeley 95 Czernik 21
Czernik 38 Juchert 11
King 17 King 18


Open clusters are subjects of numerous investigation nowadays. However, basic parameters, such as an age, a reddening, and a distance still remain unknown for a prominent part of them. In this work we present results of photometric investigating six poorly studied or unstudied open clusters. Three of them were studied recently on the basis of near-IR photometry. Another three objects were not a subject of any investigations to date. The ages, interstellar reddenings, distances, and structural parameters were derived basing on BV photometry combined with the near-infrared JHK data. The mass functions were analysed for four objects and total masses, number of members, and dynamical-evolution parameters were estimated.

Berkeley 95 was found to be an extremely young stellar cluster. King 17 and King 18 turned out to be an intermediate-age objects. Czernik 21, Czernik 38, and Juchert 11 were found to be old stellar ensembles of the age of about 1 Gyr old or older. Czernik 38 is located in the Sagittarius Arm while the remaining clusters belong to the Perseus Arm.

A mass segregation effect within a cluster volume was observed for all objects. Moreover, studied clusters were found to be dynamical young and no evaporation of low-mass members was observed. The estimated total masses were found to be about 1000 Sun's masses for Be 95, Cze 38, and King 18. In case of King 17 its total mass was found to smaller, i.e. 290 Sun's masses.


 Full paper/manuscript


» 2008AcA....58..389
» full paper (PDF)

 Available data


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Last modified: Jan 3, 2009