A-Type Stars as a Unique Challenge in Time-Domain Studies: Workshop 5. Issue Volume 14:Issue S339(2018) (November 2017)

• Record Type: Journal Article
• Authors: Lynas-Gray, A. E.; Mathys, G.
• Editors: Griffin, E.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S339(2018)
• Page Start: 230
• Page End: 235
• Publication Date: 2017-11
• Subjects: Stars: early-type, -- stars: oscillations, -- stars: activity; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921318002661
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: As photometric standards, A-Type stars have proved to be extremely useful; this is particularly true of Vega, the fundamental photometric standard. However, the identification of at least some main-sequence A-type stars as small-amplitude variables, while of interest as an issue of fundamental astrophysics, needs to be understood if they are to continue to be used as photometric standards. Flaring and Rossby waves are proposed in the literature as possible explanations, as was discussed during a well-attended Workshop debate. This report summarises the discussion, and suggests future investigations.