| Issue |
A&A
Volume 370, Number 3, May II 2001
|
|
|---|---|---|
| Page(s) | 991 - 995 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20010287 | |
| Published online | 15 May 2001 | |
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
Received:
11
January
2001
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
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