High-resolution spectroscopic measurements of Mercury were made at \(4227 \AA\) to search for neutral calcium in the atmosphere. An upper limit to the intensity is \(9.0 \mathrm{kR}\); the corresponding \(\mathrm{Ca}\) column abundance is \(<7.4 \times 10^{8}\) atoms \(\mathrm{cm}^{-2}\) with a \(\m
Upper Limit on Titan's Atmospheric Argon Abundance
β Scribed by Darrell F. Strobel; Doyle T. Hall; Xun Zhu; Michael E. Summers
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 221 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0019-1035
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