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Building Blue Stragglers with Stellar Collisions

Published online by Cambridge University Press:  01 September 2007

Evert Glebbeek  and
Onno R. Pols
Evert Glebbeek
Affiliation:
Sterrekundig Instituut Utrecht, P.O. Box 80000, 3508 TA Utrecht, The Netherlands
Onno R. Pols
Affiliation:
Sterrekundig Instituut Utrecht, P.O. Box 80000, 3508 TA Utrecht, The Netherlands
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Abstract

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The evolution of stellar collision products in cluster simulations has usually been modelled using simplified prescriptions. Such prescriptions either replace the collision product with an (evolved) main sequence star, or assume that the collision product was completely mixed during the collision.

It is known from hydrodynamical simulations of stellar collisions that collision products are not completely mixed, however. We have calculated the evolution of stellar collision products and find that they are brighter than normal main sequence stars of the same mass, but not as blue as models that assume that the collision product was fully mixed during the collision.

Keywords

Stars: blue stragglersevolutionformation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 363 - 364
Copyright
Copyright © International Astronomical Union 2008

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