[HTML][HTML] The structure of the Orion bar

CM Walmsley, A Natta, E Oliva…�- …�, v. 364, p. 301-317 (2000�…, 2000 - adsabs.harvard.edu
We have obtained NIR spectral line maps of a limited region around the Orion Bar ionization
front using the red and blue grisms of SOFI on the ESO NTT telescope. The wavelength
range covered was from 0.95 to 2.3 μm. In addition to many well studied features, we
detected two lines at 1.07 and 1.17 {mum} due to recombination to CI which have excitations
above 60000 cm-1. We also observe several features at around 1 micron of atomic nitrogen
(at still higher excitations) which we believe are caused by fluorescence of UV lines at�…