Distribution of chemical elements over the surface of the magnetic AP star Theta Aurigae

Details Distribution of chemical elements over the surface of the magnetic AP star Theta Aurigae Distribution of chemical elements over the surface of the magnetic AP star Theta Aurigae

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...307..768k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 307, Aug. 15, 1986, p. 768-776. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

23

A Stars, Magnetic Stars, Peculiar Stars, Stellar Composition, Abundance, Chromium, Iron, Line Spectra, Spatial Distribution

Scientific paper

Accurate line profiles at several phases have been obtained from spectra of Theta Aurigae taken with the Canada-France-Hawaii Telescope. These have been used to construct maps of the surface distributions of Fe, Cr, and Si by solving the inverse problem. Rather complex structures are found, with Fe showing evidence of six spots. The distributions of Fe and Cr are quite similar, but the distribution of Si is quite different. Comparisons with the configuration of the magnetic field and with the light curve are made.

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