Common Proper Motion Search for Faint Companions Around Early-Type Field   Stars - Progress Report - II
  The multiplicity of early-type stars is still not well established. The studies of individual star forming regions suggest a connection with the age and the environment. To fill in this gap, we started the first detailed adaptive-optic-assisted imaging survey of 308 BA-type field stars within 300 pc from the Sun, to derive their multiplicity in a homogeneous way. Our first epoch observations yield 195 companion candidates around 117 sample targets. The second epoch observations are underway. 
Valentin D. Ivanov, D. Nuernberger, G. Chauvin, C. Foellmi, M.   Hartung, N. Huelamo, C. Melo, M. Sterzik, X. Haubois