The POKEMON Speckle Survey of Nearby M Dwarfs. I. New Discoveries
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch, Kaspar von, Braun, David R. Ciardi, Jennifer G. Winters, Rocio Kiman

TL;DR
This survey of nearby M dwarfs using speckle imaging discovered 26 new stellar companions, enhancing understanding of M-dwarf multiplicity and aiding exoplanet detection efforts.
Contribution
The paper presents new high-resolution imaging discoveries of stellar companions around M dwarfs, including the first such companions for many targets, expanding knowledge of their multiplicity.
Findings
26 new stellar companions discovered
7.6% increase in known multiple systems
Identification of a potential brown dwarf companion
Abstract
M dwarfs are favorable targets for exoplanet detection with current instrumentation, but stellar companions can induce false positives and inhibit planet characterization. Knowledge of stellar companions is also critical to our understanding of how binary stars form and evolve. We have therefore conducted a survey of stellar companions around nearby M dwarfs, and here we present our new discoveries. Using the DSSI speckle imager at the 4.3-meter Lowell Discovery Telescope, and the similar NESSI instrument at the 3.5-meter WIYN telescope, we carried out a volume-limited survey of M-dwarf multiplicity to 15 parsecs, with a special emphasis on including the later M dwarfs that were overlooked in previous surveys. Additional brighter targets at larger distances were included for a total sample size of 1070 M dwarfs. Observations of these 1070 targets revealed 26 new companions; 22 of these…
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