Ammonia observations of bright-rimmed clouds : establishing a sample of triggered protostars

  title={Ammonia observations of bright-rimmed clouds : establishing a sample of triggered protostars},
  author={Larry Morgan and Charles C. Figura and J. S. Urquhart and Mark A. Thompson},
  journal={Monthly Notices of the Royal Astronomical Society},
We observed 42 molecular condensations within previously identified bright-rimmed clouds in the ammonia rotational inversion lines NH3(1,1), (2,2), (3,3) and (4,4) using the Green Bank Telescope in Green Bank, West Virginia. Using the relative peaks of the ammonia lines and their hyperfine satellites we have determined important parameters of these clouds, including rotational temperatures and column densities. These observations confirm the presence of dense gas towards IRAS point… 

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