The soft X-ray spectrum of Capella: discovery of intense line emission.
Abstract
A soft X-ray spectrum of Capella has been obtained with the HEAO 1 satellite. Only models which include intense line emission at 0.85 keV can adequately explain the data. The spectrum is consistent with emission from an isothermal solar-abundance plasma with a temperature of 10.5 million (+ or - 2.8 million) K. It is also consistent with a blend of temperatures between 4 and 20 million K. The intensity of the X-ray emission is constant over 2 days and similar to the intensity observed by ANS.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1978
- DOI:
- 10.1086/182718
- Bibcode:
- 1978ApJ...223L..21C
- Keywords:
-
- Stellar Coronas;
- Stellar Spectra;
- X Ray Sources;
- X Ray Spectra;
- Bremsstrahlung;
- Heao;
- Signal To Noise Ratios;
- Solar Corona;
- Stellar Models;
- X Ray Astronomy;
- Astrophysics;
- Stellar Spectra:Soft X Rays