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Heterodynspektroskopie an Planeten- und Sternatmosphaeren bei 11 Micrometer Wellenlaenge (Heterodyne Spectroscopy of Planetary and Stellar Atmospheres at a Wavelength of 11 Micrometers).

N8715040

Publication Date	1986
Personal Author	Schrey, U.
Page Count	115
Abstract	A heterodyne spectrometer for the 10 micrometer wavelength range was used for the investigation of absorption lines in planetary and stellar atmospheres with very high resolution. The atmosphere of Mars and the circumstellar envelopes of bright IR stars were investigated using IR telescopes. The Mars observations provide the isotope ratios C-12/C-13 and O-16/O-18, the large scale temperature distribution of the upper atmosphere (which shows a substantially higher temperature above the Mars North Pole than above the subsolar point) and emission structures in the absorption lines of C13O2 which indicate very cold atmospheric layers. In the envelope of the carbon star IRC+10216 absorption lines of SiH4 were measured; the envelope of R Leonis shows MH3 absorption lines. The results demonstrate the realizability of an imaging heterodyne system.
Keywords	Infrared spectroscopy Planetary atmospheres Stellar atmospheres Heterodyning Absorption spectra Infrared spectrometers Infrared stars Infrared telescopes Stellar envelopes Foreign technology
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	54C - Astrophysics
Corporate Authors	Max-Planck-Inst. fuer Physik und Astrophysik, Garching (Germany, F.R.); National Aeronautics and Space Administration, Washington, DC.
Supplemental Notes	Text in German.
Document Type	Technical Report
NTIS Issue Number	198708

Heterodynspektroskopie an Planeten- und Sternatmosphaeren bei 11 Micrometer Wellenlaenge (Heterodyne Spectroscopy of Planetary and Stellar Atmospheres at a Wavelength of 11 Micrometers).

Heterodynspektroskopie an Planeten- und Sternatmosphaeren bei 11 Micrometer Wellenlaenge (Heterodyne Spectroscopy of Planetary and Stellar Atmospheres at a Wavelength of 11 Micrometers).
N8715040

Publication Date	1986
Personal Author	Schrey, U.
Page Count	115
Abstract	A heterodyne spectrometer for the 10 micrometer wavelength range was used for the investigation of absorption lines in planetary and stellar atmospheres with very high resolution. The atmosphere of Mars and the circumstellar envelopes of bright IR stars were investigated using IR telescopes. The Mars observations provide the isotope ratios C-12/C-13 and O-16/O-18, the large scale temperature distribution of the upper atmosphere (which shows a substantially higher temperature above the Mars North Pole than above the subsolar point) and emission structures in the absorption lines of C13O2 which indicate very cold atmospheric layers. In the envelope of the carbon star IRC+10216 absorption lines of SiH4 were measured; the envelope of R Leonis shows MH3 absorption lines. The results demonstrate the realizability of an imaging heterodyne system.
Keywords	Infrared spectroscopy Planetary atmospheres Stellar atmospheres Heterodyning Absorption spectra Infrared spectrometers Infrared stars Infrared telescopes Stellar envelopes Foreign technology
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	54C - Astrophysics
Corporate Authors	Max-Planck-Inst. fuer Physik und Astrophysik, Garching (Germany, F.R.); National Aeronautics and Space Administration, Washington, DC.
Supplemental Notes	Text in German.
Document Type	Technical Report
NTIS Issue Number	198708