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Science. 2013 Jul 19;341(6143):263-6. doi: 10.1126/science.1237966.

Abundance and isotopic composition of gases in the martian atmosphere from the Curiosity rover.

Collaborators (434)

Kemppinen O, Bridges N, Johnson JR, Minitti M, Cremers D, Bell JF 3rd, Edgar L, Farmer J, Godber A, Wadhwa M, Wellington D, McEwan I, Newman C, Richardson M, Charpentier A, Peret L, King P, Blank J, Weigle G, Schmidt M, Li S, Milliken R, Robertson K, Sun V, Baker M, Edwards C, Ehlmann B, Farley K, Griffes J, Grotzinger J, Miller H, Newcombe M, Pilorget C, Rice M, Siebach K, Stack K, Stolper E, Brunet C, Hipkin V, Léveillé R, Marchand G, Sobrón Sánchez P, Favot L, Cody G, Steele A, Flückiger L, Lees D, Nefian A, Martin M, Gailhanou M, Westall F, Israël G, Agard C, Baroukh J, Donny C, Gaboriaud A, Guillemot P, Lafaille V, Lorigny E, Paillet A, Pérez R, Saccoccio M, Yana C, Armiens-Aparicio C, Caride Rodríguez J, Carrasco Blázquez I, Gómez Gómez F, Gómez-Elvira J, Hettrich S, Malvitte AL, Marín Jiménez M, Martínez-Frías J, Martín-Soler J, Martín-Torres FJ, Molina Jurado A, Mora-Sotomayor L, Muñoz Caro G, Navarro López S, Peinado-González V, Pla-García J, Rodriguez Manfredi JA, Romeral-Planelló JJ, Sans Fuentes SA, Martinez ES, Torres Redondo J, Urqui-O'Callaghan R, Zorzano Mier MP, Chipera S, Lacour JL, Mauchien P, Sirven JB, Fairén A, Hayes A, Joseph J, Sullivan R, Thomas P, Dupont A, Lundberg A, Melikechi N, Mezzacappa A, DeMarines J, Grinspoon D, Reitz G, Prats B, Atlaskin E, Genzer M, Harri AM, Haukka H, Kahanpää H, Kauhanen J, Kemppinen O, Paton M, Polkko J, Schmidt W, Siili T, Fabre C, Wray J, Wilhelm MB, Poitrasson F, Patel K, Gorevan S, Indyk S, Paulsen G, Gupta S, Bish D, Schieber J, Gondet B, Langevin Y, Geffroy C, Baratoux D, Berger G, Cros A, d'Uston C, Forni O, Gasnault O, Lasue J, Lee QM, Maurice S, Meslin PY, Pallier E, Parot Y, Pinet P, Schröder S, Toplis M, Lewin É, Brunner W, Heydari E, Achilles C, Oehler D, Sutter B, Cabane M, Coscia D, Israël G, Szopa C, Dromart G, Robert F, Sautter V, Le Mouélic S, Mangold N, Nachon M, Buch A, Stalport F, Coll P, François P, Raulin F, Teinturier S, Cameron J, Clegg S, Cousin A, DeLapp D, Dingler R, Jackson RS, Johnstone S, Lanza N, Little C, Nelson T, Wiens RC, Williams RB, Jones A, Kirkland L, Treiman A, Baker B, Cantor B, Caplinger M, Davis S, Duston B, Edgett K, Fay D, Hardgrove C, Harker D, Herrera P, Jensen E, Kennedy MR, Krezoski G, Krysak D, Lipkaman L, Malin M, McCartney E, McNair S, Nixon B, Posiolova L, Ravine M, Salamon A, Saper L, Stoiber K, Supulver K, Van Beek J, Van Beek T, Zimdar R, French KL, Iagnemma K, Miller K, Summons R, Goesmann F, Goetz W, Hviid S, Johnson M, Lefavor M, Lyness E, Breves E, Dyar MD, Fassett C, Blake DF, Bristow T, DesMarais D, Edwards L, Haberle R, Hoehler T, Hollingsworth J, Kahre M, Keely L, McKay C, Wilhelm MB, Bleacher L, Brinckerhoff W, Choi D, Dworkin JP, Eigenbrode J, Floyd M, Freissinet C, Garvin J, Glavin D, Jones A, Martin DK, McAdam A, Pavlov A, Raaen E, Smith MD, Stern J, Tan F, Meyer M, Posner A, Voytek M, Anderson RC, Aubrey A, Beegle LW, Behar A, Blaney D, Brinza D, Calef F, Christensen L, Crisp JA, DeFlores L, Ehlmann B, Feldman J, Feldman S, Flesch G, Hurowitz J, Jun I, Keymeulen D, Maki J, Mischna M, Morookian JM, Parker T, Pavri B, Schoppers M, Sengstacken A, Simmonds JJ, Spanovich N, de la Torre Juarez M, Vasavada AR, Yen A, Archer PD, Cucinotta F, Ming D, Morris RV, Niles P, Rampe E, Nolan T, Fisk M, Radziemski L, Barraclough B, Bender S, Berman D, Dobrea EN, Tokar R, Vaniman D, Williams RM, Yingst A, Lewis K, Cleghorn T, Huntress W, Manhès G, Hudgins J, Olson T, Stewart N, Sarrazin P, Grant J, Vicenzi E, Wilson SA, Bullock M, Ehresmann B, Hamilton V, Hassler D, Peterson J, Rafkin S, Zeitlin C, Fedosov F, Golovin D, Karpushkina N, Kozyrev A, Litvak M, Malakhov A, Mitrofanov I, Mokrousov M, Nikiforov S, Prokhorov V, Sanin A, Tretyakov V, Varenikov A, Vostrukhin A, Kuzmin R, Clark B, Wolff M, McLennan S, Botta O, Drake D, Bean K, Lemmon M, Schwenzer SP, Anderson RB, Herkenhoff K, Lee EM, Sucharski R, de Pablo Hernández MÁ, Blanco Avalos JJ, Ramos M, Kim MH, Malespin C, Plante I, Muller JP, Navarro-González R, Ewing R, Boynton W, Downs R, Fitzgibbon M, Harshman K, Morrison S, Dietrich W, Kortmann O, Palucis M, Sumner DY, Williams A, Lugmair G, Wilson MA, Rubin D, Jakosky B, Balic-Zunic T, Frydenvang J, Jensen JK, Kinch K, Koefoed A, Madsen MB, Stipp SL, Boyd N, Campbell JL, Gellert R, Perrett G, Pradler I, VanBommel S, Jacob S, Rowland S, Atlaskin E, Savijärvi H, Boehm E, Böttcher S, Burmeister S, Guo J, Köhler J, Martín García C, Mueller-Mellin R, Wimmer-Schweingruber R, Bridges JC, McConnochie T, Benna M, Bower H, Brunner A, Blau H, Boucher T, Carmosino M, Elliott H, Halleaux D, Rennó N, Elliott B, Spray J, Thompson L, Gordon S, Newsom H, Ollila A, Williams J, Vasconcelos P, Bentz J, Nealson K, Popa R, Kah LC, Moersch J, Tate C, Day M, Kocurek G, Hallet B, Sletten R, Francis R, McCullough E, Cloutis E, ten Kate IL, Kuzmin R, Arvidson R, Fraeman A, Scholes D, Slavney S, Stein T, Ward J, Berger J, Moores JE.

Author information

1
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA. paul.r.mahaffy@nasa.gov

Abstract

Volume mixing and isotope ratios secured with repeated atmospheric measurements taken with the Sample Analysis at Mars instrument suite on the Curiosity rover are: carbon dioxide (CO2), 0.960(±0.007); argon-40 ((40)Ar), 0.0193(±0.0001); nitrogen (N2), 0.0189(±0.0003); oxygen, 1.45(±0.09) × 10(-3); carbon monoxide, < 1.0 × 10(-3); and (40)Ar/(36)Ar, 1.9(±0.3) × 10(3). The (40)Ar/N2 ratio is 1.7 times greater and the (40)Ar/(36)Ar ratio 1.6 times lower than values reported by the Viking Lander mass spectrometer in 1976, whereas other values are generally consistent with Viking and remote sensing observations. The (40)Ar/(36)Ar ratio is consistent with martian meteoritic values, which provides additional strong support for a martian origin of these rocks. The isotopic signature δ(13)C from CO2 of ~45 per mil is independently measured with two instruments. This heavy isotope enrichment in carbon supports the hypothesis of substantial atmospheric loss.

PMID:
23869014
DOI:
10.1126/science.1237966
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