Quasi-stars, giants and the Schönberg-Chandrasekhar limit

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• Warrick Ball (IoA)
• Wednesday 15 February 2012, 13:45-14:15
• Sackler Lecture Theatre, IoA.

If you have a question about this talk, please contact Ryan Cooke.

The Schönberg-Chandrasekhar (SC) limit is a well-established result in stellar evolution. I explain the SC limit in terms of contours of constant fractional mass for polytropic envelopes in the plane of homology invariant variables U and V. In the same way, I explain the inner mass limit we previously found for quasi-stars: black holes embedded in and accreting from hydrostatic, giant-like envelopes. It also demonstrates that SC-like limits exist under a wide range of circumstances. One can test when a star is at a broader SC-like limit and I discuss possible consequences for post-main-sequence stellar evolution.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• Sackler Lecture Theatre, IoA

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