Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..22..136v&link_type=abstract
Gravitational Collapse: From Massive Stars to Planets. / First Astrophysics meeting of the Observatorio Astronomico Nacional. /
Astronomy and Astrophysics
Astrophysics
10
H Ii Regions, Stars: Circumstellar Matter, Stars: Mass Loss, Stars: Winds, Outflows
Scientific paper
We simulate the evolution of the circumstellar medium around a massive star. We take the relevant input parameters for our simulation from a stellar evolution calculation: mass loss rate, wind velocity and the number of ionizing photons as a function of time. By pursuing the calculation through the various stages of massive star evolution, using a realistic mass loss history as input, we simulate the creation and evolution of a wind-blown bubble around the star up to the time of the supernova explosion. Unlike most previous work on this subject, we include the effects of photo-ionization. From our calculations we can conclude that photo-ionization affects both the size and mass-distribution of the circumstellar bubble during the main sequence and red supergiant stage.
Garcia-Segura Guillermo
Langer Norbert
van Marle Allard Jan
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