Investigation of stellar association-open cluster relationship with the help of GAİA satellite data

OB associations and open clusters are groups of young stars residing in the spiral arms of our galaxy. In this respect, they play an essential role in studying the early stellar evolution, investigating the spiral arm structures of the Milky Way, and understanding the dynamics of our galaxy. Both groups are often associated with an ongoing or recently completed star formation process. However, it is challenging to distinguish between these groups, which exhibit very similar physical properties. In previous studies, it has been noted that open clusters are often found within the borders of the associations. Nevertheless, there is a lack of comprehensive research on associations containing open clusters in the literature. This thesis aims to create a list of the OB associations with open clusters within their radius, to identify the ones that are likely to have a common history with the clusters they contain, and to differentiate the properties of the associations concerning whether they include clusters. In this context, it has been determined that 18 associations within a radius of 3 kpc around the Sun contain at least one open cluster. The basic parameters of the open clusters were determined using up-to-date GAIA satellite data and compared with the parameters of the associations. It is determined that the 12 associations had similar space motion with the open cluster they contained. Therefore their characteristics, such as age, diameter, and mass, were compared with associations unrelated to any clusters. In conclusion, the associations with and without open clusters possess similar properties in the parameter space. By comparing the ages of the open clusters examined with the age of the associations they reside in, it is concluded that they were formed long before the association.