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A-Type Stars as a Unique Challenge in Time-Domain Studies

Workshop 5

Published online by Cambridge University Press:  29 August 2019

A. E. Lynas-Gray  and
G. Mathys
A. E. Lynas-Gray
Affiliation:
Department of Physics and Astronomy, University College London, London, England email: aelg@astro.ox.ac.uk
G. Mathys
Affiliation:
Joint ALMA Observatory & European Southern Observatory, Santiago, Chile
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Abstract

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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.

Keywords

Stars: early-typestars: oscillationsstars: activity
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 230 - 235
Copyright
© International Astronomical Union 2019 

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