BINARIES AMONG HERBIG AE/BE STARS
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Wehavestudiedthecircumstellarenvironmentof31 Herbig Ae/Be and related stars in the near infrared by means of speckle-interferometry. For the brighter objects we reach or approximate diffraction-limited resolution of 0.1 00 (typically 100 AU at the object). Of the resolved objects some show halos, some have a companion. Here we restrict ourselves to a discus- sionofbinarityinthissample.Elevenobjectshavecompanions, ve of which constitute subarcsecond binaries, mostly found by us. Although the sample is small and neither homogeneous nor complete, it indicates a similar high incidence of binaries as found in recent surveys among T Tauri stars. Where the data allow it, we discuss the nature of the companions.
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