Rotational Modulation of M/L Dwarfs due to Magnetic Spots
@article{Lane2007RotationalMO,
title={Rotational Modulation of M/L Dwarfs due to Magnetic Spots},
author={C. Lane and G. Hallinan and R. Zavala and R. Butler and R. Boyle and S. Bourke and A. Antonova and J. Doyle and F. Vrba and A. Golden},
journal={The Astrophysical Journal},
year={2007},
volume={668}
}We find periodic I-band variability in two ultracool dwarfs, TVLM 513-46546 and 2MASS J00361617+1821104, on either side of the M/L dwarf boundary. Both of these targets are short-period radio transients, with the detected I-band periods matching those found at radio wavelengths (P = 1.96 hr for TVLM 513-46546 and P = 3 hr for 2MASS J00361617+1821104). We attribute the detected I-band periodicities to the periods of rotation of the dwarfs, supported by radius estimates and measured v sin i… CONTINUE READING
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