Article (Scientific journals)
Compact star clusters of the LMC H ii region N11 C
Heydari-Malayeri, Mohammad; Royer, Pierre; Rauw, Grégor et al.
2000In Astronomy and Astrophysics, 361, p. 877-887
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Keywords :
STARS: EARLY-TYPE; ISM: H II REGIONS; ISM: INDIVIDUAL OBJECTS: N 11C; GALAXIES: MAGELLANIC CLOUDS
Abstract :
[en] Based on imaging and spectroscopy obtained at the ESO NTT telescope and using an efficient image analysis algorithm, we study the core of the LMC OB association LH 13, particularly the two compact stellar clusters Sk-66[SUP]deg[/SUP]41, and HNT in the H ii, region N 11C. We resolve Sk-66[SUP]deg[/SUP]41, into 15 components and for the first time the HNT cluster into 70 stars, and derive photometry for the members. Moreover, from medium resolution spectroscopy we determine the spectral types for sixteen stars in N 11C. We compare the color-magnitude diagrams of the clusters with that of the field stars and discuss the cluster ages. With an age of ~ ,100 Myr, the HNT cluster appears significantly older than the very young (<= 5 Myr) Sk-66[SUP]deg[/SUP]41, starburst. We suggest that most of the `field' O-stars in the core of N 11C have actually been ejected from Sk-66[SUP]deg[/SUP]41, through dynamical interactions in the compact cluster. The properties of the Sk-66[SUP]deg[/SUP]41, and HNT clusters suggest that we are viewing different star formation regions lying at different distances along the same line of sight. Based on observations obtained at the European Southern Observatory, La Silla, Chile
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Heydari-Malayeri, Mohammad;  demirm, Observatoire de Paris, 61 Avenue de l'Observatoire, 75014 Paris, France
Royer, Pierre;  Université de Liège, Institut d'Astrophysique et de Géophysique, 5 Avenue de Cointe, 4000 Liège, Belgium
Rauw, Grégor  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) - Sciences spatiales
Walborn, Nolan R;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Language :
English
Title :
Compact star clusters of the LMC H ii region N11 C
Publication date :
01 September 2000
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
361
Pages :
877-887
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 July 2009

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