Yearbook 2015

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The APEX telescope in Chile observed the sky position of the oldest historical nova, first discovered in 1670. Very surprisingly, emission from a multitude of different, even organic molecules was detected. Their peculiar isotopologic composition suggests that by no means ”normal” interstellar gas is observed, but rather material that was set free in a collision of two stars. This completely new source of interstellar molecular emission permits investigations of the end products of stellar collisions, a process that possibly occurs much more frequently than previously thought. more
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