On variation of line profiles in the spectrum of HR Del at the nebula stage. II.
Abstract
Short time variations of the central intensities ratio of the emission components (especially outward components) of [O III] at λλ4959 Å have been observed in the spectrum of HR Del at a very late nebular stage.
- Publication:
-
Astronomicheskij Tsirkulyar
- Pub Date:
- July 1987
- Bibcode:
- 1987ATsir1498....4B