Astronomy and Astrophysics – Astronomy
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.2708v&link_type=abstract
American Astronomical Society, 180th AAS Meeting, #27.08; Bulletin of the American Astronomical Society, Vol. 24, p.770
Astronomy and Astrophysics
Astronomy
1
Scientific paper
H-alpha observations of the Algol RW Tau were obtained over a three year period (Oct 88- Nov 91) at 1.3 Angstroms resolution, with coverage over the full orbit. Single-peaked emission near quadratures is easily seen in the raw spectra. The visibility and velocities of this emission place it between the stellar components. Subtracting the stellar components' light reveals that an additional double-peaked component is present at almost all phases. It's velocity is consistant with an accretion ring. An additional absorption component is seen just before and after primary eclipse. These features are seen to vary in strength and character over the three years. RW Tau is known to have intermittent emission during eclipse, from an accretion ring. While some of the out-of-eclipse emission may be associated with this ring, most must originate between the two components of the system. A model is proposed for this emission, and compared with theoretical stream flows and IUE observations of RW Tau.
Honeycutt Kent R.
Vesper David
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