Prospects in stellar and galactic observations with SIMURIS.
Abstract
The SIMURIS instruments will be able to access non-solar objects, with an interesting resolution for several stellar programmes in preparation to future long baseline interferometers in Space or on the Moon. Stellar angular diameters can be measured below the Rayleigh resolution of the SUN interferometer. Using both SUN spatial resolution and IFTS spectral resolution, the separations and velocity curves of binary stars can be determined at several wavelengths. In particular separations of binaries including Cepheids or supergiants brighter than 12 and a hotter companion brighter than 15 at 180 nm can be obtained down to 0.1 marcsec up to 2 kpc in the Galaxy, thus allowing to solve for the masses and distances of the components.
- Publication:
-
ESA Special Publication
- Pub Date:
- May 1992
- Bibcode:
- 1992ESASP.344..123F
- Keywords:
-
- Galactic Structure;
- High Resolution;
- Imaging Spectrometers;
- Interferometry;
- Spaceborne Astronomy;
- Stellar Activity;
- Binary Stars;
- Diameters;
- Emission Spectra;
- Line Spectra;
- Stellar Evolution;
- Stellar Magnetic Fields;
- Stellar Physics;
- Stellar Structure;
- Tomography;
- Astrophysics