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A. I. F. Stewart
Researcher at University of Colorado Boulder
Publications - 115
Citations - 6693
A. I. F. Stewart is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Atmosphere & Atmosphere of Mars. The author has an hindex of 43, co-authored 114 publications receiving 5832 citations. Previous affiliations of A. I. F. Stewart include California Institute of Technology & University of Oxford.
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Journal ArticleDOI
The Mars Atmosphere and Volatile Evolution (MAVEN) Mission
Bruce M. Jakosky,Robert P. Lin,J. M. Grebowsky,Janet G. Luhmann,David L. Mitchell,G. Beutelschies,T. Priser,Mario H. Acuña,L. Andersson,D. Baird,Daniel N. Baker,R. Bartlett,Mehdi Benna,Stephen W. Bougher,David Brain,D. D. Carson,S. Cauffman,Phillip C. Chamberlin,Jean-Yves Chaufray,O. Cheatom,John Clarke,John E. P. Connerney,Thomas E. Cravens,D. W. Curtis,Gregory T. Delory,S. Demcak,A. DeWolfe,Frank Eparvier,Robert E. Ergun,Anders Eriksson,Jared Espley,Xiaohua Fang,David Folta,Jane L. Fox,C. Gomez-Rosa,S. Habenicht,Jasper Halekas,Jasper Halekas,Gregory M. Holsclaw,Martin B. Houghton,Russell A. Howard,M. Jarosz,N. Jedrich,M. Johnson,Wayne Kasprzak,M. Kelley,Todd King,Mark R. Lankton,Davin Larson,François Leblanc,Franck Lefèvre,Robert Lillis,Paul R. Mahaffy,C. Mazelle,William E. McClintock,James P. McFadden,D. L. Mitchell,Franck Montmessin,J. Morrissey,W. K. Peterson,W. Possel,Jean-André Sauvaud,Nicholas M. Schneider,W. P. Sidney,S. Sparacino,A. I. F. Stewart,Robert H. Tolson,D. Toublanc,C. L. Waters,Thomas N. Woods,Roger V. Yelle,Richard W. Zurek +71 more
TL;DR: The MAVEN spacecraft has eight science instruments (with nine sensors) that measure the energy and particle input from the Sun into the Mars upper atmosphere, the response of the upper atmosphere to that input, and the resulting escape of gas to space as mentioned in this paper.
Journal ArticleDOI
Enceladus' Water Vapor Plume
Candice Hansen,Larry W. Esposito,A. I. F. Stewart,Joshua Colwell,Amanda R. Hendrix,Wayne Pryor,Donald E. Shemansky,Robert A. West +7 more
TL;DR: The Cassini spacecraft flew close to Saturn's small moon Enceladus three times in 2005 and observed stellar occultations on two flybys and confirmed the existence, composition, and regionally confined nature of a water vapor plume in the south polar region of Ence Gladus.
Journal ArticleDOI
Mariner 6 and 7 Ultraviolet Spectrometer Experiment: Upper atmosphere data
TL;DR: Upper Martian atmosphere UV emission spectrum observation noting carbon dioxide photoionization, ion fluorescent scattering and photon/electron dissociative excitation as discussed by the authors, showing that carbon dioxide photos are photoionized.
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MAVEN observations of the response of Mars to an interplanetary coronal mass ejection
Bruce M. Jakosky,Joseph M. Grebowsky,Janet G. Luhmann,John E. P. Connerney,Frank Eparvier,Robert E. Ergun,Jasper Halekas,D. Larson,Paul Mahaffy,J. P. McFadden,D. F. Mitchell,Nicholas M. Schneider,Richard W. Zurek,Stephen W. Bougher,David Brain,Yingjuan Ma,Christian Mazelle,Laila Andersson,David Andrews,D. Baird,Daniel N. Baker,Jared Bell,Mehdi Benna,Michael Chaffin,Phillip C. Chamberlin,Y.-Y. Chaufray,John Clarke,Glyn Collinson,Michael R. Combi,F. J. Crary,Thomas E. Cravens,Matteo Crismani,Shannon Curry,D. W. Curtis,Justin Deighan,Gregory T. Delory,R. M. Dewey,Gina A. DiBraccio,Chuanfei Dong,Yaxue Dong,P. Dunn,Meredith Elrod,Scott L. England,Anders Eriksson,Jared Espley,Scott Evans,Xiaohua Fang,Matthew Fillingim,K. Fortier,Christopher M. Fowler,Jane L. Fox,Hannes Gröller,Scott D. Guzewich,Takuya Hara,Yuki Harada,Gregory M. Holsclaw,Sonal Jain,R. Jolitz,François Leblanc,Christina O. Lee,Yuni Lee,Franck Lefèvre,Robert Lillis,Roberto Livi,Daniel Lo,Majd Mayyasi,William E. McClintock,T. McEnulty,Ronan Modolo,Franck Montmessin,Michiko Morooka,A. F. Nagy,Kirk Olsen,W. K. Peterson,Ali Rahmati,Suranga Ruhunusiri,Christopher T. Russell,Shotaro Sakai,J. A. Sauvaud,Kanako Seki,M. Steckiewicz,Michael L. Stevens,A. I. F. Stewart,Arnaud Stiepen,S. Stone,Valeriy Tenishev,Edward Thiemann,R. Tolson,D. Toublanc,Marissa F. Vogt,Tristan Weber,Paul Withers,Thomas N. Woods,Roger V. Yelle +93 more
TL;DR: Observations and models both show an enhancement in escape rate of ions to space during the Mars upper atmosphere, ionosphere, and interactions with the Sun and solar wind during an interplanetary coronal mass ejection impact in March 2015.
Journal ArticleDOI
The composition and structure of the Enceladus plume
Candice Hansen,Donald E. Shemansky,Larry W. Esposito,A. I. F. Stewart,Brenton Lewis,Joshua Colwell,Amanda R. Hendrix,Robert A. West,J. H. Waite,B. D. Teolis,Brian Magee +10 more
TL;DR: In this paper, the authors observed an occultation of the Sun by the water vapor plume at the south polar region of Saturn's moon Enceladus and inferred the inferred rate of water vapor injection into Saturn's magnetosphere is ∼200 kg/s.