An investigation of the micro-variations of highly luminous OBA type stars. III. The S DOR type star R 71 = HDE 269006 in the LMC.
Abstract
VBLUW photometry of the LMC S Dor type star R 71 = HDE 269006 is presented and discussed. It appears that the star similar to other high luminous OB type stars shows optical micro variations. The light amplitude is ≡0m.1 and the typical time scale ≡20d. The star fits well into the PLC relation for variable supergiants, suggesting that some type of pulsation is the cause. Contrary to a few other normal B type supergiants, the light curves of individual cycles are smooth and the V-B and B-L colours vary in anti-phase with each other. The largest colour variations usually occur in the B-U viz. ≡0m.02 (the U band contains the Balmer jump).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- December 1985
- Bibcode:
- 1985A&A...153..163V
- Keywords:
-
- Astronomical Photometry;
- Stellar Evolution;
- Supergiant Stars;
- Variable Stars;
- B Stars;
- Data Reduction;
- Light Curve;
- Magellanic Clouds;
- Stellar Color;
- Astrophysics