Formation of the Asymmetric Accretion Disk from Stellar Wind Accretion in an S-type Symbiotic Star

  title={Formation of the Asymmetric Accretion Disk from Stellar Wind Accretion in an S-type Symbiotic Star},
  author={Young-Min Lee and Hyosun Kim and Hee-Won Lee},
  journal={The Astrophysical Journal},
The accretion process in a typical S-type symbiotic star, targeting AG Draconis, is investigated through 3D hydrodynamical simulations using the FLASH code. Regardless of the wind velocity of the giant star, an accretion disk surrounding the white dwarf is always formed. In models where the wind is faster than the orbital velocity of the white dwarf, the disk size and accretion rate are consistent with the predictions under Bondi–Hoyle–Lyttleton (BHL) conditions. In slower-wind models, unlike… 

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