Indications of Inflow Motions in Regions Forming Massive Stars

@article{Wu2003IndicationsOI,
  title={Indications of Inflow Motions in Regions Forming Massive Stars},
  author={Jingwen Wu and Neal J. Evans},
  journal={The Astrophysical Journal},
  year={2003},
  volume={592}
}
Observational evidence of inflowing motions in massive star-forming regions has been extremely rare. We have made a spectroscopic survey of a sample of 28 massive star-forming cores associated with water masers. An optically thick line of HCN (3-2) was used in combination with optically thin lines [H13CN (3-2) or C34S (5-4), (3-2), and (2-1)] to identify "blue" line profiles that can indicate inflow. Comparing intensities for 18 double-peaked line profiles yields 11 blue and three red profiles… Expand

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