The Nice University stellar seismometer.
Abstract
The authors' instrument devoted to stellar seismology uses a Cacciani-type sodium cell as a very stable frequency reference for radial velocity measurements. It was successfully operated for the detection of oscillations on Procyon and Alpha Centauri in 1983 and 1984. In a new version, its sensitivity has been inreased and the sources of noise have been reduced. The authors give a brief description of the principle and discuss the limits of sensitivity. Other possible applications are also suggested. Finally they discuss the capabilities of this instrument in the context of the developement of asteroseismology.
- Publication:
-
Seismology of the Sun and Sun-Like Stars
- Pub Date:
- December 1988
- Bibcode:
- 1988ESASP.286..605S
- Keywords:
-
- Optical Measuring Instruments;
- Seismographs;
- Stellar Oscillations;
- Stellar Physics;
- Equipment Specifications;
- Optical Resonance;
- Sodium Vapor;
- Instrumentation and Photography;
- Seismicity: Astronomical Instruments;
- Stellar Oscillations: Instrumentation;
- OPTICAL MEASURING INSTRUMENTS;
- SEISMOGRAPHS;
- STELLAR OSCILLATIONS;
- STELLAR PHYSICS;
- EQUIPMENT SPECIFICATIONS;
- OPTICAL RESONANCE;
- SODIUM VAPOR