Exotic star's 'violent ejections' during companion's visits

[Rick]

Astronomers have released imagery of an "exotic" star which spurts out "regular ejections of matter" every few decades. The scientists theorise that this is caused by occasional interactions between the star and a longtime companion.

The revelations come from the European Southern Observatory (ESO), a multinational science alliance. A team of top astro brainboxes have been probing the secrets of the star HD 87643, "a member of the exotic class of B[e] stars", for some time using the ESO's mighty telecopes located high in the mountains of Chile.

More: http://www.theregister.co.uk/2009/08/07/exotic_blue_star_ejections/

[mickw]

And some more  :   http://www.space.com/scienceastronomy/090806-double-star-nebula.html