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Ten new very low‐mass close binaries resolved in the visible
Authors:N M Law  S T Hodgkin  C D Mackay  J E Baldwin
Abstract:We present preliminary results from the first part of the LuckyCam late M‐dwarf binarity survey. We survey a sample of 48 nearby (< 40 pc) and red (M5–M9) stars with the novel high angular resolution visible light imaging technique Lucky Imaging, in only 8 hours of 2.5m telescope time. We discover 10 new binaries; although the survey is sensitive to brown dwarf companions none are detected. The orbital radius distribution of the newly discovered binaries broadly matches that of previous detections by other groups, although we do discover one wide binary at ~40 AU. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Keywords:binaries: close  stars: low‐mass  brown dwarfs  instrumentation: high angular resolution  methods: observational  techniques: high angular resolution
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