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    Ultra-high-resolution observations of Ca K line variations in the β Pictoris disc

    Crawford, Ian and Spyromilio, J. and Barlow, M.J. and Diego, F. and Lagrange, A.M. (1994) Ultra-high-resolution observations of Ca K line variations in the β Pictoris disc. Monthly Notices of the Royal Astronomical Society 266 (1), L65-L68. ISSN 0035-8711.

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    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.

    Metadata

    Item Type: Article
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Depositing User: Sarah Hall
    Date Deposited: 13 Aug 2019 15:44
    Last Modified: 15 Aug 2019 05:48
    URI: http://eprints.bbk.ac.uk/id/eprint/28555

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