Kaplan, Lewis D. and Münch, Guido and Spinrad, Hyron (1964) An Analysis of the Spectrum of Mars. Astrophysical Journal, 139 (1). pp. 1-15. ISSN 0004-637X. doi:10.1086/147736. https://resolver.caltech.edu/CaltechAUTHORS:20150811-124650209
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Abstract
On a high-dispersion spectrogram of Mars taken at Mount Wilson rotational lines of H_2O near λ 8300 and CO_2 near λ 8700 have been detected. Recent laboratory measurements of line strengths by D. Rank have been used to determine the amounts of H_2O and CO_2 in the atmosphere of Mars: 14 ± 7 μ precipitable water and 55 ± 20 m atm CO_2. From the absence of O_2 in the Martian spectra, we set an upper limit of 70 cm atm for the O_2 content. By suitably combining the CO_2 amount with observations by Kuiper and Sinton of the strongly saturated bands in the 2-μ. region, a surface pressure of 25 ± 15 mb has been derived. The implications of the results on the composition of the Martian atmosphere are discussed.
| Item Type: | Article | |||||||||
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| Additional Information: | © 1964 American Astronomical Society. Received November 11, 1963. It is a pleasure to express our thanks to Professor D. Rank for providing us with unpublished laboratory data, to Professor W. S. Benedict for discussions on the H_2O spectrum, and to Professor G. P. Kuiper for sending us his observations in advance of publication. | |||||||||
| Issue or Number: | 1 | |||||||||
| DOI: | 10.1086/147736 | |||||||||
| Record Number: | CaltechAUTHORS:20150811-124650209 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150811-124650209 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 59418 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 11 Aug 2015 20:56 | |||||||||
| Last Modified: | 10 Nov 2021 22:20 |
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