Thursday
Abstract
Massive stars and black holes in star clusters and superbubbles
Massive Stars as Cosmic Monsters
University of Hertfordshire
The origin of stellar mass black holes above 20 solar masses is puzzling.
IC 10 X-1 is a black hole of at least 23 solar masses in the starbursting dwarf galaxy IC 10. We have observed its associated superbubble and compared the results to our 3D hydrodynamics simulations. The results suggest that IC 10 X-1 was formed in this environment with a mass similar to the current one.
Modelling superbubbles for massive star clusters in general, we find a critical mass-size ratio (compactness) above which massive star winds are no longer able to clear out the gas. Analogously to elliptical galaxies accretion of gas and stars might then grow a central massive object. These ideas link to the particular nucleosynthesis in massive star clusters.
IC 10 X-1 is a black hole of at least 23 solar masses in the starbursting dwarf galaxy IC 10. We have observed its associated superbubble and compared the results to our 3D hydrodynamics simulations. The results suggest that IC 10 X-1 was formed in this environment with a mass similar to the current one.
Modelling superbubbles for massive star clusters in general, we find a critical mass-size ratio (compactness) above which massive star winds are no longer able to clear out the gas. Analogously to elliptical galaxies accretion of gas and stars might then grow a central massive object. These ideas link to the particular nucleosynthesis in massive star clusters.
Schedule
13:30 - 15:00
14:40
Thursday
Wilberforce LT-28
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