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Mass segregation in the young open cluster NGC 2547

被引：28
作者：
Littlefair, SP
Naylor, T
Jeffries, RD
Devey, CR
Vine, S
机构：
[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England
[2] Univ Keele, Dept Phys, Keele ST5 5BG, Staffs, England
[3] Univ St Andrews, Dept Phys & Astron, St Andrews KY16 9AJ, Fife, Scotland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2003年 / 345卷 / 04期
关键词：
stars : formation; stars : pre-main-sequence; open clusters and associations : individual : NGC 2547;
D O I：
10.1046/j.1365-2966.2003.07035.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a study of mass segregation of the young (20-35 Myr isochronal age) open cluster NGC 2547. We find good evidence that mass segregation exists in NGC 2547 down to 3 M-., and weak evidence for mass segregation down to 1 M-.. Theoretical models of an initially unsegregated model of NGC 2547 using the NBODY2 code show weaker mass segregation, implying that at least some of the observed mass segregation has a primordial origin. We also report the discovery of three possible escaped cluster members, which share the proper motion and colours of the cluster, but lie nearly a degree from the cluster centre.
引用
收藏
页码：1205 / 1211
页数：7
相关论文
共 23 条
[1]   ARE BINARIES CONCENTRATED TOWARD THE CENTERS OF OPEN CLUSTERS [J].
ABT, HA .
ASTROPHYSICAL JOURNAL, 1980, 241 (01) :275-278
[2]  
[Anonymous], IAU S
[3]   Absolute proper motions of open clusters I. Observational data [J].
Baumgardt, H ;
Dettbarn, C ;
Wielen, R .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 2000, 146 (02) :251-258
[4]   Mass segregation in young stellar clusters [J].
Bonnell, IA ;
Davies, MB .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 295 (03) :691-698
[5]   Accretion and the stellar mass spectrum in small clusters [J].
Bonnell, IA ;
Bate, MR ;
Clarke, CJ ;
Pringle, JE .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 285 (01) :201-208
[6]   Competitive accretion in embedded stellar clusters [J].
Bonnell, IA ;
Bate, MR ;
Clarke, CJ ;
Pringle, JE .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 323 (04) :785-794
[7]  
Claria J. J., 1982, Astronomy & Astrophysics Supplement Series, V47, P323
[8]   Mass segregation in young compact star clusters in the Large Magellanic Cloud - II. Mass functions [J].
de Grijs, R ;
Gilmore, GF ;
Johnson, RA ;
Mackey, AD .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 331 (01) :245-258
[9]   A preliminary study of the Orion Nebula Cluster structure and dynamics [J].
Hillenbrand, LA ;
Hartmann, LW .
ASTROPHYSICAL JOURNAL, 1998, 492 (02) :540-553
[10]   Rotation and activity in the solar-type stars of NGC 2547 [J].
Jeffries, RD ;
Totten, EJ ;
James, DJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2000, 316 (04) :950-960
123