AB Dor: Beyond the Photosphere

Details AB Dor: Beyond the Photosphere AB Dor: Beyond the Photosphere

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..348..168d&link_type=abstract

Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE ASP Conference Series, Vol. 348, Proceedings of the Confe

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

FUSE spectra of the strong O VI 1032Å emission in the active dwarf star AB Dor show modulation in both flux and profile with rotational phase that corresponds to regions of open and closed magnetic field in the star's corona. In Dec. 2003, activity appears at mid-latitudes and is confined to ˜1.3-1.4Rstar. These observations provide the first spectroscopic confirmation of the large scale magnetic structures and their dynamics in a stellar corona.

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