http://arxiv.org/abs/1510.03667
Some stationary lines in the emission spectra of SS 433 are eclipsed, but most are not. Lines attributed to a circumbinary disk are not eclipsed, but double in relative intensity during primary eclipse. A C II doublet is eclipsed and Doppler shifts over two periods yield an orbital speed of 176 +/- 13 km/s.
M. Bowler
Wed, 14 Oct 15
44/66
Comments: 2 page note
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