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Author Betz, A. L.; Johnson, M. A.; McLaren, R. A.; Sutton, E. C.
Title Heterodyne detection of CO2 emission lines and wind velocities in the atmosphere of Venus Type Journal Article
Year 1976 Publication Astrophys. J. Abbreviated Journal
Volume 208 Issue Pages L141-L144
Keywords carbon dioxide, emission spectra, optical heterodyning, planetary radiation, venus atmosphere, wind velocity, doppler effect, infrared radiation, ultraviolet radiation, venus clouds
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Notes Approved no
Call Number (up) Serial 455
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Author Bruderer, S.; Benz, A. O.; van Dishoeck, E. F.; Melchior, M.; Doty, S. D.; van der Tak, F.; Stäuber, P.; Wampfler, S. F.; Dedes, C.; Yıldız, U. A.; Pagani, L.; Giannini, T.; de Graauw, Th.; Whyborn, N.; Teyssier, D.; Jellema, W.; Shipman, R.; Schieder, R.; Honingh, N.; Caux, E.; Bächtold, W.; Csillaghy, A.; Monstein, C.; Bachiller, R.; Baudry, A.; Benedettini, M.; Bergin, E.; Bjerkeli, P.; Blake, G. A.; Bontemps, S.; Braine, J.; Caselli, P.; Cernicharo, J.; Codella, C.; Daniel, F.; di Giorgio, A. M.; Dominik, C.; Encrenaz, P.; Fich, M.; Fuente, A.; Goicoechea, J. R.; Helmich, F.; Herczeg, G. J.; Herpin, F.; Hogerheijde, M. R.; Jacq, T.; Johnstone, D.; Jørgensen, J. K.; Kristensen, L. E.; Larsson, B.; Lis, D.; Liseau, R.; Marseille, M.; McCoey, C.; Melnick, G.; Neufeld, D.; Nisini, B.; Olberg, M.; Parise, B.; Pearson, J. C.; Plume, R.; Risacher, C.; Santiago-García, J.; Saraceno, P.; Shipman, R.; Tafalla, M.; van Kempen, T. A.; Visser, R.; Wyrowski, F.
Title Herschel/HIFI detections of hydrides towards AFGL 2591. Envelope emission versus tenuous cloud absorption Type Journal Article
Year 2010 Publication Astron. Astrophys. Abbreviated Journal
Volume 521 Issue Pages L44 (1 to 7)
Keywords HEB mixer applications, HIFI, Herschel
Abstract The Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory allows the first observations of light diatomic molecules at high spectral resolution and in multiple transitions. Here, we report deep integrations using HIFI in different lines of hydrides towards the high-mass star forming region AFGL 2591. Detected are CH, CH+, NH, OH+, H2O+, while NH+ and SH+ have not been detected. All molecules except for CH and CH+ are seen in absorption with low excitation temperatures and at velocities different from the systemic velocity of the protostellar envelope. Surprisingly, the CH(JF,P = 3/22,- – 1/21,+ ) and CH+(J = 1–0, J = 2–1) lines are detected in emission at the systemic velocity. We can assign the absorption features to a foreground cloud and an outflow lobe, while the CH and CH+ emission stems from the envelope. The observed abundance and excitation of CH and CH+ can be explained in the scenario of FUV irradiated outflow walls, where a cavity etched out by the outflow allows protostellar FUV photons to irradiate and heat the envelope at larger distances driving the chemical reactions that produce these molecules.
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Call Number (up) Serial 1083
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Author Taylor, F.W.
Title Atmospheric physics: Natural lasers on Venus and Mars Type Journal Article
Year 1983 Publication Nature Abbreviated Journal Nature
Volume 306 Issue 5944 Pages 640-640
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ISSN 0028-0836 ISBN Medium
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Notes Approved no
Call Number (up) Serial 457
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Author Norton, P.
Title HgCdTe infrared detectors Type Journal Article
Year 2002 Publication Opto-Electronics Review Abbreviated Journal Opto-Electron. Rev.
Volume 10 Issue 3 Pages 159-174
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Call Number (up) Serial 458
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Author Abbas, M. M.; Mumma, M. J.; Kostiuk, T.; Buhl, D.
Title Sensitivity limits of an infrared heterodyne spectrometer for astrophysical applications: errata Type Journal Article
Year 1977 Publication Applied Optics Abbreviated Journal Appl. Opt.
Volume 16 Issue 11 Pages 2793
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ISSN 0003-6935 ISBN Medium
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Notes Approved no
Call Number (up) Serial 459
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