Kinematics and Variable Stars in NGC 1907 and NGC 1912

摘要

We introduce our ongoing photometric and spectroscopic survey in the region of open clusters NGC 1907 and NGC 1912. The radial velocity dispersion of about 4 km s~(-1) in the clusters supports the interpretationj of physical interaction between them. We found 17 variable stars in the examined fields covering about 2/3 of the "cluster area". The relative low number (0.2%) of eclipsing variables supports the broadened internal velocity distribution to be the reason of the increased dispersion.