NDLI: Temperature, Abundance and Magnetic Mapping of Stellar Atmospheres

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Temperature, Abundance and Magnetic Mapping of Stellar Atmospheres

Content Provider	Scilit
Author	Donati, J. -F.
Copyright Year	1993
Description	In this paper, I review recent progress in the domain of indirect imaging of stellar atmospheres. Since all stars other than the Sun are too far away for us to disclose any feature on their surface directly, one has to use an indirect tool to image their atmosphere. This method (Doppler Imaging) takes advantage of a star’s rotation to identify and characterise inhomogeneities on its surface. This is done by studyingbothhow inhomogeneities (carried in and out of the observer’s view by rotation) modulate photometric and spectroscopic data withtime, and how surface features distort theshapeof line profiles at a given rotational phase. In the last decade, Doppler Imaging has first been applied to abundance mapping of magnetic Ap stars, then extended to temperature and magnetic mapping of cool active stars. Allowing a solar-like way of studying the surface of stars, this technique provides a wealth of information about stellar atmospheres and, in particular, about the physical processes which dictate their dynamics and energy balance.
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/C06EA952D12009B377579BC5DBD5ED78/S0252921100017619a.pdf/div-class-title-temperature-abundance-and-magnetic-mapping-of-stellar-atmospheres-div.pdf
Ending Page	149
Page Count	14
Starting Page	136
ISSN	02529211
DOI	10.1017/s0252921100017619
Journal	International Astronomical Union Colloquium
Volume Number	137
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	1993-01-01
Access Restriction	Open
Subject Keyword	International Astronomical Union Colloquium Astronomy and Astrophysics Stellar Atmospheres Abundance Mapping of Magnetic
Content Type	Text
Resource Type	Article

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