ROSAT observations of the stellar coronal dividing line.
Abstract
The authors present an update on the results of the ROSAT X-ray All-Sky Survey observations of stellar sources presented by Haisch, Schmitt and Rosso (1991). In that paper the presence of a coronal dividing line in the H-R diagram at approximately spectral type K3 II to K3 IV was established by the clear difference in distribution of the 65 ROSAT detections vs. the 868 non-detections of BSC stars in the 70 percent-complete survey. The remaining 30 percent of the survey has now been processed resulting in 31 additional detections of stellar coronae, all of which lie to the left of the dividing line.
- Publication:
-
UV and X-ray Spectroscopy of Laboratory and Astrophysical Plasmas
- Pub Date:
- 1993
- Bibcode:
- 1993uxrs.conf..547H
- Keywords:
-
- Stellar Coronae: Stellar Winds;
- Stellar Coronae: X Rays;
- Stellar Winds: X Rays