Sahai, Raghvendra; Kastner, Joel H.; Frank, Adam; Morris, Mark; Blackman, Eric G.
(The American Astronomical Society, 2003-12-20)
We report the first detection of X-ray emission in a pre–planetary nebula, He 3-1475. Pre–planetary nebulae are rare objects in the short transition stage between the asymptotic giant branch (AGB) and planetary nebula ...