Runaway collisions in young star clusters - II. Numerical results
نویسندگان
چکیده
منابع مشابه
Runaway collisions in young star clusters. II. Numerical results
We present a new study of the collisional runaway scenario to form an intermediatemass black hole (IMBH, MBH & 100M⊙) at the centre of a young, compact stellar cluster. The first phase is the formation of a very dense central core of massive stars (M∗ ≃ 30 − 120M⊙) through mass segregation and gravothermal collapse. Previous work established the conditions for this to happen before the massive ...
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We study the occurrence of physical collisions between stars in young and compact star cluster. The calculations are performed on the GRAPE-4 with the starlab software environment which include the dynamical evolution and the nuclear evolution of all stars and binaries. The selection of the initial conditions is based on existing and well observed star clusters, such as R136 in the 30 Doradus r...
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We present the methods and preparatory work for our study of the collisional runaway scenario to form a very massive star (VMS, M∗ > 400M⊙) at the centre of a young, compact stellar cluster. In the first phase of the process, a very dense central core of massive stars (M∗ ≃ 30− 120M⊙) forms through mass segregation and gravothermal collapse. This leads to a collisional stage, likely to result i...
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The evolution of young compact star clusters is studied using N -body simulations in which both stellar evolution and physical collisions between stars are taken into account. The initial conditions are chosen to represent R 136, a compact star cluster in the 30Doradus region of the Large Magellanic Cloud. The present runs do not include the effects of primordial binaries. We find that physical...
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We consider the effect of mass segregation on the observable integrated properties of star clusters. The measurable properties depend on a combination of the dynamical age of the cluster and the physical age of the stars in the cluster. To investigate all possible combinations of these two quantities, we propose an analytical model for the mass function of segregated star clusters that agrees w...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2006
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2006.10096.x