A simple dynamical evolutionary model for ω Cen

被引:16
作者
Giersz, M
Heggie, DC
机构
[1] Polish Acad Sci, Nicolas Copernicus Astron Ctr, PL-00716 Warsaw, Poland
[2] Univ Edinburgh, Sch Math, Edinburgh EH9 3JZ, Midlothian, Scotland
关键词
stellar dynamics; methods : miscellaneous; stars : luminosity function; mass function; globular clusters : individual : omega Cen;
D O I
10.1046/j.1365-8711.2003.06191.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We construct a simple dynamical model of the massive globular cluster omega Cen. The model includes simple treatments of dynamical evolution in a galactic tide, and evolution of single stars. Binary stars and rotation are neglected. The model approximately fits observational data on the surface brightness profile, the profile of radial velocity dispersion, and the main sequence mass function at two radii.
引用
收藏
页码:486 / 490
页数:5
相关论文
共 49 条
[1]  
Anderson A. J., 1997, PhD thesis
[2]  
ANDERSON AJ, 2002, ASP C SER, V265, P87
[3]   VLT observations of the peculiar globular cluster NGC 6712 - II. luminosity and mass functions [J].
Andreuzzi, G ;
De Marchi, G ;
Ferraro, FR ;
Paresce, F ;
Pulone, L ;
Buonanno, R .
ASTRONOMY & ASTROPHYSICS, 2001, 372 (03) :851-861
[4]  
Baraffe I, 1997, ASTRON ASTROPHYS, V327, P1054
[5]   Scaling of N-body calculations [J].
Baumgardt, H .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 325 (04) :1323-1331
[6]   EVOLUTION OF GLOBULAR-CLUSTERS IN THE GALAXY [J].
CHERNOFF, DF ;
WEINBERG, MD .
ASTROPHYSICAL JOURNAL, 1990, 351 (01) :121-156
[7]   The main sequence and a white dwarf sequence in the globular cluster NGC 6397 [J].
Cool, AM ;
Piotto, G ;
King, IR .
ASTROPHYSICAL JOURNAL, 1996, 468 (02) :655-+
[8]   The luminosity function of ω Centauri [J].
De Marchi, G .
ASTRONOMICAL JOURNAL, 1999, 117 (01) :303-307
[9]   The mass function of main-sequence stars in NGC 6397 from near-infrared and optical high-resolution Hubble Space Telescope observations [J].
De Marchi, G ;
Paresce, F ;
Pulone, L .
ASTROPHYSICAL JOURNAL, 2000, 530 (01) :342-351
[10]   FOKKER-PLANCK MODELS OF NGC-6397 [J].
DRUKIER, GA .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1995, 100 (02) :347-370