| タイトル | The deep atmosphere of Venus revealed by high-resolution nightside spectra |
| 著者（英） | Crisp, David; De Bergh, Catherine; Maillard, Jean-Pierre; Bezard, Bruno |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|Observatoire de Paris-Meudon|Institut d'Astrophysique |
| 発行日 | 1990-06-07 |
| 言語 | eng |
| 内容記述 | The first high-resolution spectroscopic observations of the night side of Venus obtained in two narrow spectral windows centered at 1.74 and 2.3 microns, where the nightside is anomalously bright, are reported. Absorption features from CO2, CO, H2O, HDO, HCl, HF, and COS are detected, and there are a number of unidentified features. A preliminary analysis indicates that the observed radiation is thermal emission from atmospheric layers in the eight-bar pressure region for the 2.3 micron window and even deeper at 1.7 micron. The derived CO and H2O abundances agree with in situ Pioneer measurements in the deep troposphere and are consistent with the high deuterium enrichment inferred from Pioneer data. The first measurements of HCl and HF below the clouds are reported along with the first firm detection of COS. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 90A37923 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/355830 |
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