Resolving dusty wind of RW Aur A

2018-11-16T05:58:54Z (GMT) by Safonov, Boris
RW Aur is a young star with protoplanetary disk. The star shows irregular eclipses similar to UXORs, but with larger amplitude and duration. It also demonstrates extraordinary high polarization degree in minimum light. These features may be explained by emergence of dusty wind in 2010 (Dodin et al 2018, submitted). We observed the object using speckle polarimetry in 0.5-0.8 mkm range using a dedicated instrument installed at 2.5-m telescope of SAI MSU. The instrument combines features of speckle interferometer and two-beam polarimeter. We detected a fan-shaped reflection nebula on the angular scale 50-100 mas in the closest vicinity of the RW Aur A. The parameters of this nebulosity are consistent with suggestion that it is actually dust expelled from protoplanetary disk by the wind.