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Analysis of surface structures of chemically peculiar stars with modern and future interferometers
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2014 (English)In: OPTICAL AND INFRARED INTERFEROMETRY IV, 2014, Vol. 9146, 91462VConference paper (Refereed)
Abstract [en]

Interferometry is a very powerful observational technique known in astronomy for many decades. Its application to main-sequence stars, however, is still limited to only brightest objects. In this work we aim to explore the application of interferometry to a special class of main-sequence stars known as chemically peculiar (CP) stars. These stars demonstrate surface chemical abundance inhomogeneities (spots) that usually cover a considerable part of the stellar surface and induce a pronounced spectral and photometric variability. Interferometry thus has a potential to naturally resolve such spots in single stars, providing unique complementary information about spots sizes and contrasts. By means of numerical experiments we derive the actual interferometric requirements essential for the CP stars research that can be addressed in future instrument development. The first comparison between theoretical predictions and already available observations will also be discussed.

Place, publisher, year, edition, pages
2014. Vol. 9146, 91462V
, Proceedings of SPIE, ISSN 0277-786X
Keyword [en]
stars: atmospheres, stars: chemically peculiar, stars: individual: epsilon UMa, techniques: interferometric
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-257340DOI: 10.1117/12.2055555ISI: 000354379200085ISBN: 978-0-8194-9614-0OAI: oai:DiVA.org:uu-257340DiVA: diva2:838946
Conference on Optical and Infrared Interferometry IV, JUN 23-27, 2014, Montreal, CANADA
Available from: 2015-07-01 Created: 2015-07-01 Last updated: 2015-07-01Bibliographically approved

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Kochukhov, Oleg
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Department of Physics and AstronomyObservational Astronomy
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