Alert Notice 657: HerbigAeBe stars need monitoring for Chandra observations November 21, 2018: Dr. Hans Moritz Guenther (MIT; Kavli Institute for Astrophysics and Space Research) and colleagues have requested AAVSO observers’ assistance in monitoring several HerbigAeBe stars in support of upcoming observations scheduled with Chandra. Dr. Guenther writes: “We are going to observe five HerbigAeBe […]