Broad Hα Wings in Active Symbiotic Stars: The Case of Z Andromedae

Details Broad Hα Wings in Active Symbiotic Stars: The Case of Z Andromedae Broad Hα Wings in Active Symbiotic Stars: The Case of Z Andromedae

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..362..228s&link_type=abstract

The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held

Astronomy and Astrophysics

Astrophysics

Scientific paper

During the major 2000-2003 outburst of the symbiotic prototype Z And, broad Hα wings extending to about ±2,000 km s-1 developed. We fitted them with the model of a bipolar stellar wind from the hot star. We determined the corresponding mass-loss rates as 2.3× 10-6 M&sun; yr-1 at the maximum, 3.3× 10-6 M&sun; yr-1 during the 2002/03 re-brightening and 1.6× 10-6 M&sun; yr-1 at the end of the outburst, in 2003 November. A possibility of Raman scattering as the responsible process for the broad Hα wings is briefly discussed.

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