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Gravitationally bound companions to stars enable determinations of theirmasses, and offer clues to their formation, evolution and dynamical histories.So motivated, we have carried out a speckle imaging survey of eight of thenearest and brightest Wolf-Rayet (WR) stars to directly measure the frequencyof their resolvable companions, and to search for much fainter companions thanhitherto possible. We found one new, close companion to each of WR 113, WR 115and WR 120 in the separation range 0.2" - 1.2". Our results provide moreevidence that similar-brightness, close companions to WR stars are common. Moreremarkably, they also demonstrate that the predicted, but much fainter and thuselusive companions to WR stars are now within reach of modern speckle camerason 8m class telescopes by finding the first example. The new companion to WR113 is just 1.16" distant from it, and is 8 magnitudes fainter than the WRstar. The empirical probability of a chance line-of-sight of the faintcompanion at the position of WR 113 is < 0.5%, though we cannot yet prove ordisprove if the two stars are gravitationally bound. If these three newdetections are physical companions we suggest, based on their narrowbandmagnitudes, colors, reddenings and GAIA distances that the companions to WR113,WR 115 and WR 120 are an F-type dwarf, an early B-type dwarf, and a WNE-type WRstar, respectively.

A Speckle-Imaging Search for Close and Very Faint Companions to the Nearest and Brightest Wolf-Rayet Stars