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An Analysis of the Spectrum of Mars

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. 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
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/147736DOIArticle
http://adsabs.harvard.edu/abs/1964ApJ...139....1KADSArticle
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 It is a pleasure to express our thanks to Professor D. Rank for providing us with unpublished laboratory data, to Professor W. S. Benedict for discussions on the H_2O spectrum, and to Professor G. P. Kuiper for sending us his observations in advance of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
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:03 Oct 2019 08:46

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