Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...370..991k&link_type=abstract
Astronomy and Astrophysics, v.370, p.991-995 (2001)
Astronomy and Astrophysics
Astrophysics
4
Surveys, Stars: Flare, Stars: Formation, Ism: Clouds
Scientific paper
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 mu m) 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 (R_MAX ~ 15\fm55, RMIN > 22\fm5) however, could not be traced. We assume that the flare star is enshrouded in a dust cloud of AV>10m. By using a K vs. J-K 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 1600+/-400 pc and that of the foreground extinction AV = 2+/-0.5 mag. Based on observations collected at the European Southern Observatory, La Silla, Chile at the DENIS consortium survey instrument.
Kimeswenger Stefan
Weinberger Ram
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