Properties of Open Clusters in the Regions of the Local Bubble and the Eridanus Superbubble

Abstract

Abstract Features of the relative positions of open clusters and two superbubbles in the vicinity of the Sun, the Local Bubble and the Eridanus Superbubble, are considered. It is shown that the open clusters are concentrated toward the neutral gas shell of the Local Bubble, while there is a deficiency of clusters inside the cavity. All clusters associated with the Eridanus Superbubble belong to a compact group at the northern edge of the shell; no clusters are present inside the superbubble. Kinematics, age, and other physical and chemical properties of the clusters are investigated. It is found that the metal-deficient clusters and the clusters with high velocities are absent in the sample considered; i.e. the properties of the clusters associated with the Local Bubble and the Eridanus Superbubble are typical of the thin disk objects of the Galaxy.