M1-2, a possible eclipsing binary planetary nebula central star.
Abstract
The planetary nebula M1-2 (133 -8.1 deg) has been found to exhibit light variability, suggesting that it may contain the third eclipsing binary central star discovered among planetary nebulae to date. Its 4.0002 + or - .0003 hour period is in conflict with previous spectroscopic classifications of the central star as a G supergiant. Further photometric and spectroscopic observations are called for.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- August 1980
- Bibcode:
- 1980A&A....88L..11D
- Keywords:
-
- Astronomical Spectroscopy;
- Eclipsing Binary Stars;
- Periodic Variations;
- Planetary Nebulae;
- Astronomical Photometry;
- Supergiant Stars;
- Astronomy