Velocity anisotropy in tidally limited star clusters
نویسندگان
چکیده
منابع مشابه
Tidally limited star clusters – comparing gaseous models with other techniques
We present new models of the evolution and dissolution of star clusters evolving under the combined influence of internal relaxation and external tidal fields, using the anisotropic gaseous model based on the Fokker-Planck approximation, and a new escaper loss cone model. This model borrows ideas from loss cones of stellar distributions near massive black holes, and describes physical processes...
متن کاملLifetimes of tidally limited star clusters with different radii
We study the escape rate of stars, Ṅ , from clusters with different radii on circular orbits in a tidal field using analytical predictions and direct N -body simulations. We find that Ṅ depends on the ratio R ≡ rh/rJ, where rh is the half-mass radius and rJ the radius of the zero-velocity surface around the cluster. For R & 0.05, the “tidal regime”, there is almost no dependence of Ṅ on R. To f...
متن کاملAnisotropic gaseous models of tidally limited star clusters – comparison with other methods
We present new models of the evolution and dissolution of star clusters evolving under the combined influence of internal relaxation and external tidal fields, using the anisotropic gaseous model based on the Fokker-Planck approximation, and a new escaper loss cone model. This model borrows ideas from loss cones of stellar distributions near massive black holes, and describes physical processes...
متن کاملTidally - induced Super Star Clusters in M 82
Using new HST imaging, we identify a large, evolved system of super star clusters in a disk region just outside the starburst core in the prototypical starburst galaxy M82, " M82 B. " This region has been suspected to be a fossil starburst site in which an intense episode of star formation occurred over 100 Myr ago, which is now confirmed by our derived age distribution. It suggests steady, con...
متن کاملScaling relations in dynamical evolution of star clusters
We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2015
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stv2574