Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...348..161m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 348, Jan. 1, 1990, p. 161-168.
Astronomy and Astrophysics
Astrophysics
24
Far Infrared Radiation, Hydroxyl Emission, Infrared Spectra, Orion Nebula, Oxygen Isotopes, Emission Spectra, Ground State, Line Spectra, Star Formation
Scientific paper
Observations within 1 arcmin of Orion-KL have led to the detection of the O-16H rotational cross-ladder transition at 53.351 microns and the O-18H rotational ground-state transition at 120.1719 microns, both of which exhibit a P-Cygni profile and demonstrate that the OH gas is expanding out from the central BN/KL IR cluster. The best overall fit to these data requires emission from the three main components of the gas: (1) postshocked gas, (2) the cool postshocked region, and (3) the plateau region. All three components require a significant radiative background in order to fit the data.
Genzel Reinhard
Lugten John B.
Melnick Gary J.
Poglitsch Albrecht
Stacey Gordon J.
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