Discovery of coronal emission lines in V407 Cyg
Abstract
We report about discovery of [FeX] 6375, [FeXI] 7890, [ArX] 5535 and [NiXII] 4233 Ang coronal emission lines in V407 Cyg, which are steadily increasing in intensity with time. V07 Cyg is a symbiotic binary harboring a Mira variable, of 745 day pulsation and a possible orbital period of 43 years, at a distance of 2.5/3.0 kpc and a reddening of E(B-V)=0.5/0.6 (Munari et al. 1990, MNRAS 242, 653).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2010
- Bibcode:
- 2010ATel.2546....1M
- Keywords:
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- Optical;
- Binaries;
- Cataclysmic Variables;
- Novae;
- Variables