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Formation of neutral disk-like zone around the active hot stars in symbiotic binaries | Zuzana Carikova
; Augustin Skopal
; | Date: |
22 Sep 2011 | Abstract: | In this contribution we present the ionization structure in the enhanced wind
from the hot star in symbiotic binaries during active phases. Rotation of the
hot star leads to the compression of the outflowing material towards its
equatorial plane. As a result a neutral disk-like zone around the active hot
star near the orbital plane is created. We modelled the compression of the wind
using the wind compression model. Further, we calculated the neutral disk-like
zone in the enhanced wind from the hot star using the equation of the
photoionization equilibrium. The presence of such neutral disk-like zones was
also suggested on the basis of the modelling the spectral energy distribution
of symbiotic binaries. We confront the calculated ionization structures in the
enhanced wind from the hot star with the observations. We found that the
calculated column density of the neutral hydrogen atoms in the neutral
disk-like zone and the emission measure of the ionized part of the wind from
the hot star are in a good agreement with quantities derived from observations
during active phases. The presence of such neutral disk-like zones is
transient, being connected with the active phases of symbiotic binaries. During
quiescent phases, such neutral disk-like zones cannot be created, because of
insufficient mass loss rate of the hot star. | Source: | arXiv, 1109.4779 | Services: | Forum | Review | PDF | Favorites |
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