49 citations · 200 across the 6 of their papers we have counts for
7 papers
New or Improved Orbital Periods of Cataclysmic Binaries
John R. Thorstensen, Frederick A. Ringwald, Cynthia J. Taylor +5
We present a table of 58 cataclysmic binary orbital periods determined using data from MDM Observatory. Most are heretofore unpublished; some are refinements of previously publishe…
Spectroscopic Orbital Periods for 29 Cataclysmic Variables from the Sloan Digital Sky Survey
John R. Thorstensen, Cynthia J. Taylor, Christopher S. Peters +3
We report follow-up spectroscopy of 29 cataclysmic variables from the Sloan Digital Sky Survey (SDSS), 22 of which were discovered by SDSS and seven other previously known systems…
Spectroscopy of Nine Cataclysmic Variable Stars
H. A. Sheets, J. R. Thorstensen, C. J. Peters +2
We present optical spectroscopy of nine cataclysmic binary stars, mostly dwarf novae, obtained primarily to determine orbital periods Porb. The stars and their periods are LX And,…
Spectroscopy of Seven Cataclysmic Variables with Periods Above Five Hours
John R. Thorstensen, William H. Fenton, Cynthia J. Taylor
We present spectroscopy of seven cataclysmic variable stars with orbital periods P(orb) greater than 5 hours, all but one of which are known to be dwarf novae. Using radial velocit…
Spectroscopy and orbital periods of four cataclysmic variable stars
J. R. Thorstensen, C. J. Taylor
We present spectroscopy and orbital periods Porb of four relatively little-studied cataclysmic variable stars. The stars and their periods are: AF Cam, Porb = 0.324(1) d (the daily…
The Post-Common Envelope and Pre-Cataclysmic Binary PG 1224+309
Jerome A. Orosz, Richard A. Wade, Jason J. B. Harlow +3
We have made extensive spectroscopic and photometric observations of PG 1224+309, a close binary containing a DA white dwarf primary and an M4+ secondary. The H alpha line is in em…