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astro-ph2007★ 27 cited
Detection of strong activity in the eclipsing binary brown dwarf 2MASSJ05352184-0546085 - A possible explanation for the temperature reversal
A. Reiners, A. Seifahrt, K. G. Stassun +2
We show high resolution spectra of the eclipsing brown dwarf binary 2MASSJ05352184-0546085 taken at the two opposite radial velocity maxima. Comparisons of the TiO bands to model a…
astro-ph2007★ 18 cited
Spectral type dependent rotational braking and strong magnetic flux in three components of the late-M multiple system LHS 1070
Ansgar Reiners, Andreas Seifahrt, Hans Ulrich Käufl +2
We show individual high resolution spectra of components A, B, and C of the nearby late-M type multiple system LHS 1070. Component A is a mid-M star, B and C are known to have mass…
astro-ph2007★ 49 cited
The multiplicity of planet host stars - New low-mass companions to planet host stars
M. Mugrauer, A. Seifahrt, R. Neuhaeuser
We present new results from our ongoing multiplicity study of exoplanet host stars, carried out with the infrared camera SofI at ESO-NTT. We have identified new low mass companions…