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A Search for Coronal Emission Lines from Early-Type Stars

  • D. Baade (a1) and L. B. Lucy (a1)

Extract

For more than ten years now, a controversial issue in studies of stellar winds has concerned the existence or not of a coronal zone (T ∼ 106 K) at the base of the cool winds (TTeff ) of early-type stars. The latest revival of interest in this possibility is due to Wolfire et al. (1985) who showed that Waldron's (1984) recombination stellar wind (RSW) version of the hot corona – cool wind model (Hearn 1975; Cassinelli et al. 1978) yields models for ξ Puppis (O4 If) that are consistent with both IRAS and Einstein IPC data, thus refuting an earlier claim (Lamers et al. 1984) to have excluded the existence of a coronal zone.

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Copyright

References

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Baade, D., Lucy, L.B.: 1987, Astron. Astrophys. 178, 213.
Hearn, A.G.: 1975, Astron. Astrophys. 40, 277.
Lamers, H.J.G.L.M., Rogerson, J.B.: 1978, Astron. Astrophys. 66, 417.
Lamers, H.J.G.L.M., Waters, L.B.F.M., Wesselius, P.R.: 1984, Astron. Astrophys. 134, L17.
Mason, H.E.: 1975, Mon. Not. R. ast. Soc. 170, 651.
Nordsieck, K.H., Cassinelli, J.P., Anderson, C.M.: 1981, Astrophys. J. 248, 678.
Slettebak, A.: 1956, Astrophys. J. 124, 173.
Waldron, W.L.: 1984, Astrophys. J. 282, 256.
Wolfire, M.G., Waldron, W.L., Cassinelli, J.P.: 1985, Astron. Astrophys. 142, L25.

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