Near-Infrared Spectroscopy of Photodissociation Regions: The Orion Bar and Orion S

Details Near-Infrared Spectroscopy of Photodissociation Regions: The Orion Bar and Orion S Near-Infrared Spectroscopy of Photodissociation Regions: The Orion Bar and Orion S

1998-01-03

arxiv.org/abs/astro-ph/9801009v1

Astrophys.J. 499 (1998) 799

Astronomy and Astrophysics

Astrophysics

Accepted to Astrophysical Journal

Scientific paper

10.1086/305682

To test the PDR model spectra under the physical conditions present in Orion, we have obtained moderate-resolution (R=3000) J-, H-, and K-band long-slit spectra of the Orion bar and Orion S regions These observations provide conclusive evidence for the PDR origin (rather than shocks) of the H_2 emission in each of these regions and demonstrate significant departures in the observed chemical structure from that predicted by models of homogeneous PDRs.

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