Ingersoll, Andrew P.
(1971)
Polarization Measurements Of Mars And Mercury: Rayleigh Scattering In The Martian Atmosphere.
Astrophysical Journal, 163
.
pp. 121-129.
ISSN 0004-637X.
doi:10.1086/150750.
https://resolver.caltech.edu/CaltechAUTHORS:20130531-141355438
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Abstract
Ground-based polarimetric data taken near maximum elongation are presented. These data are
analyzed on the assumption of an optically thin, Rayleigh-scattering atmosphere, and a surface whose
polarization varies inversely as surface albedo. For Mars, the best fit to the data yields an estimate of
surface pressure in the range 4-7.5 mb, if CO_2 is the principal constituent. There is no need to postulate
the existence of fine dust in the Martian atmosphere. For Mercury, the best fit to the data yields an upper
limit on Rayleigh scattering equal to 0.001 of the Earth's atmosphere.
| Item Type: | Article |
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| Additional Information: | © 1971 American Astronomical Society.
Received 1970 March 11; revised 1970 June 24.
I should like to thank Sol L. Giles for building the equipment used in this study and
James A. Westphal for instruction in various aspects of observational astronomy. This
research was supported by the National Aeronautics and Space Administration under
grant NGL-05-002-003.
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| Funders: | | Funding Agency | Grant Number |
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| NASA | NGL-05-002-003 |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Caltech Division of Geological Sciences | No. 1738 |
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| DOI: | 10.1086/150750 |
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| Record Number: | CaltechAUTHORS:20130531-141355438 |
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| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130531-141355438 |
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 38735 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: | INVALID USER |
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| Deposited On: | 31 May 2013 21:41 |
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| Last Modified: | 09 Nov 2021 23:39 |
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