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Rotation of M and L Dwarfs from High Resolution Infrared Spectra

Published online by Cambridge University Press:  26 May 2016

Kenneth H. Hinkle ,
Lloyd Wallace ,
Jeff Valenti  and
Takashi Tsuji
Kenneth H. Hinkle
Affiliation:
National Optical Astronomy Observatory, Tucson, Arizona 85726, USA
Lloyd Wallace
Affiliation:
National Optical Astronomy Observatory, Tucson, Arizona 85726, USA
Jeff Valenti
Affiliation:
Space Telescope Science Institute, Baltimore, Maryland 21218, USA
Takashi Tsuji
Affiliation:
The University of Tokyo, Mitaka, Tokyo 181-0015, Japan

Abstract

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v sin i has been measured from high-resolution (λ/Δλ~50000) infrared spectra of ~30 M and L dwarfs. The spectral region observed covers approximately 0.01 μm centered at 2.312 μm in the CO 2-0 band. v sin i, measured from the CO lines, increases dramatically from the M to L dwarfs. In extreme cases the rotational periods are a few hours.

Type
Session 1 Observations of Rotating Stars
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 136 - 137
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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