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Ultra-high-resolution observations of Ca K line variations in the Formula Pictoris disc
- Source :
- Monthly Notices of the Royal Astronomical Society. 266:L65-L68
- Publication Year :
- 1994
- Publisher :
- Oxford University Press (OUP), 1994.
-
Abstract
- We present observations of the β Pictoris circumstellar Ca II K line, obtained with the new Ultra-High-Resolution facility (UHRF) at the Anglo-Australian Telescope. The resolving power was R≳900000, and these data therefore comprise the highest resolution observations yet obtained of this object. Observations were obtained on three nights in 1993 (May 11, August 26 and August 29), and significant temporal variability was observed, including previously unobserved changes in the profile of the main circumstellar component.
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 266
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi...........db87b5cb429a13521f84a54b45485b12