NGC 7538 IRS 2 in [Ne ii]: shell and cavity kinematics of a compact H ii region

  title={NGC 7538 IRS 2 in [Ne ii]: shell and cavity kinematics of a compact H ii region},
  author={Dan Beilis and Sara C. Beck and John Henry Lacy},
  journal={Monthly Notices of the Royal Astronomical Society},
NGC 7538 IRS 2 is a compact H ii region and recent star formation source, with a shell morphology, lying on the border of the visible H ii region NGC 7538. We present a spectral cube of the [Ne ii] 12.8 $\mu$m emission line obtained with the TEXES spectrometer on Gemini North with velocity resolution ∼4 km s−1 and angular resolution ∼0.3 arcsec. The kinematics of the data cube show ionized gas flowing along multiple cavity walls. We have simulated the kinematics and structure of IRS 2 with a… 

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