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Titolo: IRAS 18456-0223 - a flare star in a new star forming region
Autore: Kimeswenger, S; Weinberger, R;
- Indirizzi:
- Leopold Franzens Univ Innsbruck, Inst Astrophys, A-6020 Innsbruck, AustriaLeopold Franzens Univ Innsbruck Innsbruck Austria A-6020 sbruck, Austria
- Titolo Testata:
- ASTRONOMY & ASTROPHYSICS
fascicolo: 3,
volume: 370,
anno: 2001,
pagine: 991 - 995
- SICI:
- 1432-0746(200105)370:3<991:I1-AFS>2.0.ZU;2-3
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- I MOLECULAR CLOUD; PLANETARY-NEBULAE; DENIS;
- Keywords:
- surveys; stars : flare; stars : formation; ISM : clouds;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 16
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Kimeswenger, S Leopold Franzens Univ Innsbruck, Inst Astrophys, Technikerstr 25, A-6020 Innsbruck, Austria Leopold Franzens Univ Innsbruck Technikerstr 25 Innsbruck Austria A-6020
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- Citazione:
- S. Kimeswenger e R. Weinberger, "IRAS 18456-0223 - a flare star in a new star forming region", ASTRON ASTR, 370(3), 2001, pp. 991-995
Abstract
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 outrough red band photometry and accurate astrometry of those stellar objects. In addition, near-infrared images were obtained with the DENIS survey instrument in 1(0.8), J (1.25) and K-s (2.15 mum) 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 approximate to 15.(m)55: R-MIN > 22.(m)5) however, could nut be traced. We assume that the flare staris enshrouded in a dust cloud of A(V) > 10(m). 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+/- 100 pc and that of the foreground extinction A(V) = 2 +/- 0.5 mag.
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Documento generato il 25/05/13 alle ore 18:16:00