A model for the spectroscopic variations of the peculiar symbiotic star MWC 560

Details A model for the spectroscopic variations of the peculiar symbiotic star MWC 560 A model for the spectroscopic variations of the peculiar symbiotic star MWC 560

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..671s&link_type=abstract

The Astronomical Journal, vol. 108, no. 2, p. 671-677

Astronomy and Astrophysics

Astronomy

18

Binary Stars, Iue, Symbiotic Stars, Ultraviolet Absorption, Ultraviolet Spectroscopy, Astronomical Photometry, Light Curve, Stellar Luminosity

Scientific paper

In this note, we show that the ultraviolet and optical spectroscopic variability of this unique symbiotic star can be understood in terms of a time variable collimated stellar wind with a rapid acceleration near the source. Using the radial velocities observed during the ultraviolet bright phase, we find that a variation in the mass loss rate of a factor of ten can explain the ultraviolet spectral changes. The acceleration is far faster than normally observed in radiatively driven stellar winds and may be due to mechanical driving of the outflow from the disk.

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