Poster Open Access

The Mean Magnetic Field of HD 113816

Johns-Krull, Christopher M.

Editor(s)
Wolk, Scott

HD 113816 (IS Vir) is a K0 III RS CVn star. We use high resolution K band spectra obtained with the
CHSELL spectrometer to measure the mean magnetic field across the stellar surface. Four strong Ti I
lines provide significant sensitivity to magnetic fields, while several magnetically insensitive CO lines
provide a check on all other line broadening mechanisms. Our initial analysis reveals a mean field of ~1
kG across the entire stellar surface. We discuss the implications of this measurement.

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  • Johns-Krull, C. M. (2007), ApJ, 664, 975

  • Johns-Krull, C.M. & Valenti, J.A. (2000), ASPC, 198, 371

  • Katz, D. et al. (2003), A&A, 397, 747

  • Piskunov, N. (1999), ASSL, 243, 515

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