An Ionized Outflow from AB Aur, a Herbig Ae Star with a Transitional Disk

摘要: AB Aur is a Herbig Ae star with transitional disk. Transitional disks present substantial dust clearing in their inner regions, most probably because of the formation one or more planets, although other explanations are still viable. In objects, accretion found to be about an order magnitude smaller than classical full disks. Since believed correlated outflow activity, centimeter free-free jets expected association these systems, at weaker levels protoplanetary (full) systems. We new observations radio emission associated regions and conclude that morphology, orientation, spectral index lack temporal variability source imply presence collimated, ionized outflow. The luminosity this jet is, however, 20 times for system similar bolometric luminosity. continuum stars disks, but becoming detectable only upgraded arrays. On hand, assuming velocity 300 km s$^{-1}$, we find ratio mass loss rate $\sim$0.1, less evolved