The EUV spectrum of AT Microscopii.
Abstract
The Extreme Ultraviolet Explorer (EUVE) spectroscopic and photometric observations of the dMe close binary system AT Mic are investigated. The photometric observation shows several small flare-like brightening and just at the very end of the observation a large flare. The spectrometer observation has been used to study a model of the coronal differential emission measure (DEM) as a function of temperature. The DEM shows a minimum at =~10^6^K and a maximum at =~10^7^K. A number of highly ionized lines of iron (Fe XVIII-XXIII) are identified by means of an EUV synthetic spectrum calculated using the DEM model and the spectral code of Monsignori Fossi & Landini (1994).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1995
- Bibcode:
- 1995A&A...302..193M
- Keywords:
-
- STARS: CORONAE;
- STARS: INDIVIDUAL: AT MIC;
- LINE: IDENTIFICATION;
- ULTRAVIOLET: STARS;
- X-RAYS: STARS