Abstract
Observations of the CO J=6→5 transition at 691 GHz (434 μm) in new interstellar and planetary sources have been made. The heterodyne receiver uses an optically pumped laser local oscillator and a quasi-optical Schottky diode mixer, with measured noise temperatures consistently under 4000 K (double sideband). Continued improvements in system performance and antenna coupling have made possible the mapping of 434 μm emission from W3, and the detection of CO J=5→6 absorption in the atmosphere of Venus. A detailed description of the instrumentation and recent observational data are provided.
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H. R. Fetterman, G. A. Koepf, P. F. Goldsmith, B. J. Clifton, D. Buhl, N. R. Erickson, D. D. Peck, N. McAvoy, and P. E. Tannenwald, Science211, 580 (1981).
P. G. Wannier and T. G. Phillips, Astrophys. J.215, 796 (1977).
T. G. Phillips, P. J. Huggins, G. Neugebauer and M. W. Werner, Astrophys. J.217, L161 (1977).
D. M. Watson, J. W. V. Storey, C. H. Townes, E. E. Haller and W. L. Hansen, Astrophys. J. Lett.239, L129 (1980).
H. R. Fetterman, P. E. Tannenwald, B. J. Clifton, C. D. Parker, W. D. Fitzgerald, and N. R. Erickson, Appl. Phys. Lett.33(2), 151 (1978).
R. E. Hills, A. S. Webster, D. A. Alston, P. L. R. Morse, C. C. Zammit, D. H. Martin, D. P. Rice, and E. I. Robson, Infrared Phys.18, 819 (1978).
G. A. Koepf, H. R. Fetterman, and N. McAvoy, Int. J. of IR and MM Waves,1, 597 (1980).
P. F. Goldsmith, N. R. Erickson, H. R. Fetterman, B. J. Clifton, D. D. Peck, P. E. Tannenwald, G. A. Koepf, D. Buhl, and N. McAvoy, Astrophys. J.243, L79 (1981).
G. A. Koepf, D. Buhl, G. Chin, D. D. Peck, H. R. Fetterman, B. J. Clifton, and P. E. Tannenwald, Astrophys. J.260, 584 (1982).
E. Brackmann and N. Scoville, Astrophys. J.242, 112 (1980).
R. K. Kakar, J. W. Waters, and W. J. Wilson, Science191, 379 (1976).
D. Buhl, in preparation (1984).
N. R. Erickson and H. R. Fetterman, Bull. Am. Phys. Soc.27, 836 (1982).
G. F. Dionne, H. R. Fetterman, N. R. Erickson, C. D. Parker, and J. F. Fitzgerald, Solid S. Res. Rept., Lincoln Laboratory, M.I.T., p. 33 (1982∶4); submitted for publication, IEEE J. Quantum Elec.
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Visiting Astronomer at the Infrared Telescope Facility, which is operated by the University of Hawaii from the National Aeronautics and Space Administration
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Peck, D.D., Fetterman, H.R., Buhl, D. et al. Molecular astronomy using heterodyne detection at 691 GHz. Int J Infrared Milli Waves 5, 329–340 (1984). https://doi.org/10.1007/BF01009661
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DOI: https://doi.org/10.1007/BF01009661