Discrepant measurements of the radial velocities of SS cygni: solution to the problem |
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| Authors: | E L Robinson |
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| Institution: | (1) McDonald Observatory and Department of Astronomy, The University of Texas at Austin, USA |
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| Abstract: | We show that the discrepancies among the various measurements of the radial velocity curve of the K5 V star in the dwarf nova SS Cyg have been caused by (1) poor choices of lines for measuring its velocity and (2) large distortions in its velocity caused by heating from the white dwarf and its accretion disk. The correctK velocity of the center of mass of the K5 V star is 158±3km s
–1.Paper presented at the IAU Colloquium No. 93 on  Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Development , held at Dr. Remeis-Sternwarte Bamberg, F.R.G., 16–19 June, 1986. |
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