IRAS 18456-0223 -a flare star in a new star forming region*
Institut für Astrophysik der Leopold-Franzens-Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
Corresponding author: S. Kimeswenger, Stefan.Kimeswenger@uibk.ac.at
Accepted: 16 February 2001
We report the discovery of a new conspicuous flare star coincident with the position of the IRAS PSC source 18456-0223 that is located in or projected on a dark cloud. In the immediate vicinity of the source, a very faint nebula and a small group of stars are detected in the optical. We carried out rough red band photometry and accurate astrometry of those stellar objects. In addition, near-infrared images were obtained with the DENIS survey instrument in I (0.8), J (1.25) and Ks (2.15 μm) that show an increasing number of stars which appear to constitute a small cluster around the position of the IRAS source; the flare star itself ( 15 fraction of minute55, 22 fraction of minute5) however, could not be traced. We assume that the flare star is enshrouded in a dust cloud of . By using a K vs. diagram we were able to detect a new star forming region around IRAS 18456-0223 by identifying a number of YSO candidates. The distance estimate is pc and that of the foreground extinction mag.
Key words: surveys / stars: flare / stars: formation / ISM: clouds
© ESO, 2001