Accretion Flow and Disparate Profiles of Raman Scattered O $VI{\lambda}{\lambda}1032$ and 1038 in the Symbiotic Star V1016 Cygni

  • Heo, Jeong-Eun (Department of Astronomy and Space Science, Sejong University) ;
  • Lee, Hee-Won (Department of Astronomy and Space Science, Sejong University)
  • 발행 : 2014.10.13

초록

The symbiotic star V1016 Cygni shows the Raman scattered O VI features at $6825{\AA}$ and $7088{\AA}$. These are formed through inelastic scattering of O VI 1032, 1038 by atomic hydrogen. They exhibit characteristic double peak profiles with a stronger red peak, which is explained by the accretion flow around the white dwarf. In addition, the two Raman features have different profiles in such a way that the blue part of the Raman 7088 feature is relatively more suppressed than the Raman 6825 counterpart. We produced the Doppler maps of the two Raman features in order to trace the origin of the disparate profiles. We conclude that the profile difference is due to various O VI 1032 to O VI 1038 flux ratios in the accretion region. This is consistent with the picture where the slow stellar wind from the giant interacts with the accretion flow around the white dwarf.

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