10 New Very Low Mass Close Binaries Resolved in the Visible

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 ~40AU.

arXiv commentAccepted to Astron. Nachr

References in corpus (1)

• Discovery of Two Very Low-Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars

Cited by in corpus (4)

• Measuring the Recoverability of Close Binaries in Gaia DR2 with the Robo-AO Kepler Survey
• Getting Lucky with Adaptive Optics: Fast AO Image Selection in the Visible with a Large Telescope
• Discovery of Five Very Low Mass Close Binaries, Resolved in the Visible with Lucky Imaging
• The LuckyCam Survey for Very Low Mass Binaries II: 13 new M4.5-M6.0 Binaries