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2001MNRAS.328.1193J - Mon. Not. R. Astron. Soc., 328, 1193-1199 (2001/December-3)
Secular and orbital variability of Cir X-1 observed in optical spectra.
JOHNSTON H.M., WU K., FENDER R. and CULLEN J.G.
Abstract (from CDS):
We have observed an absorption component to the Hei lines on one occasion. We suggest that, unlike the P Cygni profiles seen in X-ray spectra, this absorption does not arise in the accelerating zone of a radiatively driven wind. Instead, the absorption arises in material previously ejected from the system. It was only seen on this one occasion because the strength of the emission line had dropped dramatically.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): binaries: spectroscopic - stars: individual: Cir X-1 - X-rays: stars
Simbad objects: 9
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