Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5918k&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #59.18; Bulletin of the American Astronomical Society, Vol. 33, p.874
Astronomy and Astrophysics
Astronomy
2
Scientific paper
Using a superconductive hot-electron bolometer heterodyne receiver on the 10-m Heinrich Hertz Telescope on Mount Graham, Arizona, we have obtained velocity-resolved 1.037 THz CO(J=9-8) spectra toward several positions along the Orion Molecular Cloud ridge. We confirm the general results of prior observations of high-J CO lines that showed that the high temperature, ~ 130 K, high density molecular gas, n ~ 106 cm-3, is quite extended, found along a 4' region centered on BN/KL. With an angular resolution of 9'' we are able to spatially and kinematically discrimate the very strong, broad line emission from the emission originating in the more quiescent regions. Our experiment convincingly demonstrates the feasibility of conducting observations from a ground-based site at THz frequencies, especially in the context of heterodyne-mode observing.
Blundell Ray
Edward Tong C.-Y.
Gershenzon Eugene
Gol'tsman Gregory
Henkel Carsten
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