A Search for Soft X-Ray Emission from Stellar Sources
Abstract
With the soft X-ray detector (∼0.2 0.284 keV) aboard the Astronomical Netherlands Satellite (ANS) we have searched for X-ray emission from hot star coronae and peculiar stars. On Sirius (α CMa) and Capella (α Aur) X-ray emission has been measured at 6σ and 5σ level, respectively, above background. In all other cases the search revealed no evidence for soft X-ray emission. Upper limits to the luminosities of about 25 star coronae (main-sequence stars, (sub)giants, and supergiants) and of 4 peculiar stars (λ Sco, β Lyr, P Cyg, and η Car) have been obtained.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- June 1976
- DOI:
- 10.1007/BF00645546
- Bibcode:
- 1976Ap&SS..42..217M
- Keywords:
-
- Astronomical Netherlands Satellite;
- Hot Stars;
- Spaceborne Astronomy;
- Stellar Radiation;
- X Ray Astronomy;
- Coronas;
- Main Sequence Stars;
- Radiant Flux Density;
- Radiation Detectors;
- Satellite-Borne Instruments;
- Stellar Luminosity;
- Stellar Spectra;
- Supergiant Stars;
- Ultraviolet Radiation;
- Ultraviolet Spectroscopy;
- Astronomy