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A SPITZER census of star formation activity on the Pipe Nebula

posted Sep 30, 2010, 7:50 AM by João Alves   [ updated Apr 26, 2011, 2:57 PM ]
For its size and mass the Pipe Nebula seems to be exceptionally inefficient in forming stars. A SPITZER MIPS survey at wavelengths of 24 μm and 70 μm of essentially the entire cloud turned out only a hand full of candidates. The resulting star formation efficiency for the entire cloud mass is only ~0.06%.