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Mass segregation effects in very young open clusters

Published online by Cambridge University Press:  01 October 2007

L. Chen ,
R. de Grijs  and
J. L. Zhao
L. Chen
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China email: chenli@shao.ac.cn, jlzhao@shao.ac.cn
R. de Grijs
Affiliation:
Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK; and National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China email: r.degrijs@sheffield.ac.uk
J. L. Zhao
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China email: chenli@shao.ac.cn, jlzhao@shao.ac.cn
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Abstract

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We derived proper motions and membership probabilities of stars in the regions of two very young (~ 2–4 Myr-old) open clusters NGC 2244 and NGC 6530. Both clusters show clear evidence of mass segregation, which provides strong support for the suggestion that the observed mass segregation is – at least partially – due to the way in which star formation has proceeded in these complex star-forming regions (“primordial” mass segregation).

Keywords

open clusters and associations: generalopen clusters and associations: individual (NGC2244)open clusters and associations: individual (NGC6530)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 481 - 483
Copyright
Copyright © International Astronomical Union 2008

References

Bonnell, I. A., Bate, M. R., Clarke, C. J., & Pringle, J. E. 2001a, MNRAS, 323, 785CrossRefGoogle Scholar
Bonnell, I. A., Clarke, C. J., Bate, M. R., & Pringle, J. E. 2001b, MNRAS, 324, 573CrossRefGoogle Scholar
Brandl, B., Sams, B. J., Bertoldi, F., Eckart, A., Genzel, R., Drapatz, S., Hofmann, R., Löwe, M., & Quirrenbach, A. 1996, ApJ, 466, 254CrossRefGoogle Scholar
Campbell, B., et al. 1992, AJ, 104, 1721CrossRefGoogle Scholar
Chen, L., de Grijs, R., & Zhao, J. L. 2007, AJ, 134, 1368CrossRefGoogle Scholar
Hillenbrand, L. A. 1997, AJ, 113, 1733CrossRefGoogle Scholar
Larson, R. B. 1991, in: Falgarone, E., Boulanger, F., & Duvert, G., (eds.), Fragmentation of Molecular Clouds and Star Formation, IAU Symp. 147 (Dordrecht: Kluwer), p. 261CrossRefGoogle Scholar
Wang, J. J. 1997, Annals of Shanghai Observatory, Acad. Sinica, 18, 45Google Scholar
Zhao, J. L. & He, Y. P. 1987, Acta Astr. Sin., 28, 374Google Scholar