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Kawamura, J.; Hunter, T. R.; Tong, C. Y. E.; Blundell, R.; Papa, D. C.; Patt, F.; Peters, W.; Wilson, T.; Henkel, C.; Goltsman, G.; Gershenzon, E. |
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Ground-based terahertz CO spectroscopy towards Orion |
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2002 |
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A&A |
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A&A |
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394 |
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1 |
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271-274 |
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HEB mixers, applications |
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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 () spectra toward several positions along the Orion Molecular Cloud (OMC-1) ridge. We confirm the general results of prior observations of high-J CO lines that show that the high temperature, , high density molecular gas, , is quite extended, found along a ~ region centered on BN/KL. However, our observations have significantly improved angular resolution, and with a beam size of we are able to spatially and kinematically discriminate the emission originating in the extended quiescent ridge from the very strong and broadened emission originating in the compact molecular outflow. The ridge emission very close to the BN/KL region appears to originate from two distinct clouds along the line of sight with and ≈ . The former component dominates the emission to the south of BN/KL and the latter to the north, with a turnover point coincident with or near BN/KL. Our evidence precludes a simple rotation of the inner ridge and lends support to a model in which there are multiple molecular clouds along the line of sight towards the Orion ridge. |
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Käufl, H. U.; Rothermal, H.; Drapatz, S. |
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Title |
Investigation of the Martian atmosphere by 10 micron heterodyne spectroscopy |
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1984 |
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Astron. Astrophys. |
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A&A |
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136 |
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319-325 |
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astronomical spectroscopy, atmospheric composition, infrared astronomy, mars atmosphere, spectral line width, carbon dioxide concentration, nonequilibrium thermodynamics, optical heterodyning, planetary radiation, mars, atmosphere, spectroscopy, atmosphere, carbon dioxide, altitude, kinetics, rotation, thermal properties, temperature, emissions, intensity, models, data, spectra |
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449 |
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Rothermel, H.; Käufl, H. U.; Schrey, U.; Drapatz, S. |
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Title |
Thermal structure of the Martian mesosphere |
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1988 |
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Astron. Astrophys. |
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A&A |
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196 |
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296-300 |
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atmospheric temperature, carbon dioxide, infrared spectroscopy, mars atmosphere, mesosphere, emission spectra, line spectra, spatial resolution, mars, atmosphere, mesosphere, structure, thermal properties, spectra, spectroscopy, earth-based observations, temperature, patterns, infrared, polar regions, wavelengths, equipment, procedure, carbon dioxide, emissions |
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Rothermel1988 |
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450 |
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Johnson, M. A.; Betz, A. L.; McLaren, R. A.; Townes, C. H.; Sutton, E. C. |
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Nonthermal 10 micron CO2 emission lines in the atmospheres of Mars and Venus |
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1976 |
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Astron. Astrophys. |
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A&A |
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208 |
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145 |
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carbon dioxide, emission spectra, infrared spectra, mars atmosphere, nonthermal radiation, optical heterodyning, planetary radiation, venus atmosphere, absorption spectra, energy transfer, line spectra, molecular absorption, molecular collisions, near infrared radiation, solar flux |
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ref1976ApJ...208L.145J |
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451 |
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Kaeufl, H. U.; Rothermel, H.; Drapatz, S. |
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Indication for H2O in the upper atmosphere of Mars |
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1984 |
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Astron. Astrophys. |
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A&A |
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141 |
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430-432 |
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atmospheric moisture, mars atmosphere, upper atmosphere, water vapor, carbon dioxide, emission spectra, nonequilibrium thermodynamics, polar regions |
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