The effects of inclination, gravity darkening and differential rotation on absorption profiles of fast rotators

  title={The effects of inclination, gravity darkening and differential rotation on absorption profiles of fast rotators},
  author={A. Reiners},
  journal={Astronomy and Astrophysics},
  • A. Reiners
  • Published 24 June 2003
  • Physics
  • Astronomy and Astrophysics
Mechanisms influencing absorption line profiles of fast rotating stars can be sorted into two groups; (i) intrinsic variations sensitive to temperature and pressure, and (ii) global eects common to all spectral lines. I present a detailed study on the latter eects focusing on gravity darkening and inclination for various rotational velocities and spectral types. It is shown that the line shapes of rapidly and rigidly rotating stars mainly depend on the equatorial velocityve, not on the… 

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