A study of the spatial stellar mass distribution in some young open clusters

Ram Sagar, ; Miakutin, V. I. ; Piskunov, A. E. ; Dluzhnevskaia, O. B. (1988) A study of the spatial stellar mass distribution in some young open clusters Monthly Notices of the Royal Astronomical Society, 234 (4). pp. 831-845. ISSN 0035-8711

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Official URL: http://ads.ari.uni-heidelberg.de/abs/1988MNRAS.234...


The stellar spatial distribution as a function of mass is studied in 11 young open clusters and the presence of mass segregation is observed in seven of these. The possibility of two cluster centres is indicated for NGC 2264. Except in Tr 1, the conventional relaxation and energy equipartition times are larger than the cluster ages which may indicate that the observed mass segregation is due to the star formation processes. However, the possibility of dynamical processes being responsible for the effect of mass segregation in some of these clusters cannot be completely ruled out. Present analysis suggests that observed mass segregation in open clusters older than some million years might be due to a combination of both initial star formation conditions and dynamical evolutionary processes, but in younger ones only initial star formation conditions can be responsible.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Mass Distribution; Open Clusters; Spatial Distribution; Star Distribution; Stellar Mass; Cosmology; Star Formation; Stellar Evolution; Stellar Motions
ID Code:67787
Deposited On:31 Oct 2011 13:33
Last Modified:31 Oct 2011 13:33

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