Shocked Self-similar Collapses and Flows in Star Formation Processes

  title={Shocked Self-similar Collapses and Flows in Star Formation Processes},
  author={Yue Shen and Yu-qing Lou},
  journal={The Astrophysical Journal Letters},
  pages={L117 - L120}
  • Yue Shen, Y. Lou
  • Published 16 July 2004
  • Physics
  • The Astrophysical Journal Letters
We propose self-similar shocked flow models for certain dynamical evolution phases of young stellar objects, "champagne flows" of H II regions surrounding OB stars, and shaping processes of planetary nebulae. We analyze an isothermal fluid of spherical symmetry and construct families of self-similar shocked flow solutions that feature (1) either a core expansion with a finite central density or a core accretion at a constant rate with a density scaling proportional to r-3/2 (a free-fall state… 

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