Binary Stars among Cataclysmic Variables.VI. on the Mean Absolute Magnitude of U Geminorum Variables.
Abstract
From twenty-five proper motions and eleven radial velocities, the solar motion and mean parallax of U Geminorum stars have been estimated. The solar apex is Ao = 263 , Do = +19 , and so 30 km/sec. The mean absolute magnitude of U Gem stars at minimum light is estimated to be Mv = +7.5 + 0 7. If there is a spread in the absolute magnitudes depending on the period of the orbit, it seems possible to explain why the spectroscopic absolute magnitudes of SS Cyg, AE Aqr, RU Peg, and EY Cyg are approximately 2 mag. brighter than the mean value.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 1965
- DOI:
- 10.1086/148374
- Bibcode:
- 1965ApJ...142.1041K