26Al and the Formation of the Solar System from a Molecular Cloud Contaminated by Wolf-Rayet Winds

  title={26Al and the Formation of the Solar System from a Molecular Cloud Contaminated by Wolf-Rayet Winds},
  author={Eric Gaidos and Alexander N. Krot and Jonathan P. Williams and Sean N. Raymond},
  journal={The Astrophysical Journal},
In agreement with previous work, we show that the presence of the short-lived radionuclide (SLR) 26Al in the early solar system was unlikely (less than 2% a priori probability) to be the result of direct introduction of supernova (SN) ejecta into the gaseous disk during the Class II stage of protosolar evolution. We also show that Bondi-Hoyle accretion of any contaminated residual gas from the Sun's natal star cluster contributed negligible 26Al to the primordial solar system. Our calculations… 

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