Binary Evolution, SN Ia Progenitors

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Presenter : Cheyvonne Media:Example.ogg

Suggested Starting Points

Note that you should have download access to these articles if you are browsing from an on-campus internet address. May not work from home.

Scenario Machine: Interactive Binary Star Builder


Explore various evolutionary scenarios for binaries at

http://xray.sai.msu.ru/sciwork/scenario.html

You may want to begin with

A = 600, M1 = 3, M2 = 2,

and increase/decrease the orbital distance by a factor of 10.


Questions:

  1. What type of systems are produced along evolutionary sequences? The systems that are produced along the evolutionary sequence include Primordial systems, First common envelope stage, Intermediate, Second Common envelope, gravitational wave radiation, start of heavy disk phase, Supernovae type I.
  2. How to change parameters to produce a system consisting of a neutron star and a white dwarf?



Discussion


Back to Astro Seminar

What is the main idea?


What have we learned about stellar interiors from combining stellar evolutionary theory with observation?

What conditions are most likely to lead to symbiotic stars?

The only unifying characteristic of symbiotic stars is that they are all binary. How would the laws of the universe have to change to permit the existence of higher order symbiotic systems? Would binary systems sill be able to exist in such a universe?