Low upper limit to methane abundance on Mars
Por:
Mahaffy P.R., Atreya S.K., Flesch G.J., Farley K.A., Bridges N., Johnson J.R., Minitti M., Cremers D., Bell J.F., III, 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., 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., Sánchez P.S., Favot L., Cody G., Steele A., Flückiger L., Lees D., Nefian A., Martin M., Gailhanou M., Westall F., Agard C., Baroukh J., Donny C., Gaboriaud A., Guillemot P., Lafaille V., Lorigny E., Paillet A., Pérez R., Saccoccio M., Yana C., Aparicio C.A., Rodríguez J.C., Blázquez I.C., Gómez F.G., Elvira J.G., Hettrich S., Malvitte A.L., Jiménez M.M., Martínez-Frías J., Soler J.M., Martín-Torres F.J., Jurado A.M., Mora-Sotomayor L., Caro G.M., López S.N., Peinado-González V., Pla-García J., Rodriguez Manfredi J.A., Romeral-Planelló J.J., Sans Fuentes S.A., Martinez E.S., Redondo J.T., Urqui-O'Callaghan R., Mier M.-P.Z., Chipera S., Lacour J.-L., Mauchien P., Sirven J.-B., Manning H., Fairén A., Hayes A., Joseph J., Squyres S., Sullivan R., Thomas P., Dupont A., Lundberg A., Melikechi N., Mezzacappa A., DeMarines J., Grinspoon D., Reitz G., Prats B., Genzer M., Harri A.-M., Haukka H., Kahanpää H., Kauhanen J., Kemppinen O., Paton M., Polkko J., Schmidt W., Siili T., Fabre C., Wray J., 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 Q.-M., Maurice S., Meslin P.-Y., 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 R.S., Johnstone S., Lanza N., Little C., Nelson T., Wiens R.C., Williams R.B., 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 M.R., 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 K.L., Iagnemma K., Miller K., Summons R., Goesmann F., Goetz W., Hviid S., Johnson M., Lefavor M., Lyness E., Breves E., Darby Dyar M., Fassett C., Blake D.F., Bristow T., DesMarais D., Edwards L., Haberle R., Hoehler T., Hollingsworth J., Kahre M., Keely L., McKay C., Wilhelm M.B., Bleacher L., Brinckerhoff W., Choi D., Conrad P., Dworkin J.P., Eigenbrode J., Floyd M., Freissinet C., Garvin J., Glavin D., Harpold D., Jones A., Mahaffy P., Martin D.K., McAdam A., Pavlov A., Raaen E., Smith M.D., Stern J., Tan F., Trainer M., Meyer M., Posner A., Voytek M., Anderson R.C., Aubrey A., Beegle L.W., Behar A., Blaney D., Brinza D., Calef F., Christensen L., Crisp J.A., DeFlores L., Ehlmann B., Feldman J., Feldman S., Flesch G., Hurowitz J., Jun I., Keymeulen D., Maki J., Mischna M., Morookian J.M., Parker T., Pavri B., Schoppers M., Sengstacken A., Simmonds J.J., Spanovich N., de la Torre Juarez M., Vasavada A.R., Webster C.R., Yen A., Archer P.D., Cucinotta F., Jones J.H., Ming D., Morris R.V., Niles P., Rampe E., Nolan T., Fisk M., Radziemski L., Barraclough B., Bender S., Berman D., Dobrea E.N., Tokar R., Vaniman D., Williams R.M.E., Yingst A., Lewis K., Leshin L., Cleghorn T., Huntress W., Manhès G., Hudgins J., Olson T., Stewart N., Sarrazin P., Grant J., Vicenzi E., Wilson S.A., 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., Clark B., Wolff M., McLennan S., Botta O., Drake D., Bean K., Lemmon M., Schwenzer S.P., Anderson R.B., Herkenhoff K., Lee E.M., Sucharski R., de Pablo Hernández M.Á., Blanco Ávalos J.J., Ramos M., Kim M.-H., Malespin C., Plante I., Muller J.-P., Navarro-González R., Ewing R., Boynton W., Downs R., Fitzgibbon M., Harshman K., Morrison S., Dietrich W., Kortmann O., Palucis M., Sumner D.Y., Williams A., Lugmair G., Wilson M.A., Rubin D., Jakosky B., Balic-Zunic T., Frydenvang J., Jensen J.K., Kinch K., Koefoed A., Madsen M.B., Svane Stipp S.L., Boyd N., Campbell J.L., Gellert R., Perrett G., Pradler I., VanBommel S., Jacob S., Owen T., Rowland S., Atlaskin E., Savijärvi H., Boehm E., Böttcher S., Burmeister S., Guo J., Köhler J., García C.M., Mueller-Mellin R., Wimmer-Schweingruber R., Bridges J.C., McConnochie T., Benna M., Franz H., Bower H., Brunner A., Blau H., Boucher T., Carmosino M., Atreya S., Elliott H., Halleaux D., Rennó N., Wong M., Pepin R., Elliott B., Spray J., Thompson L., Gordon S., Newsom H., Ollila A., Williams J., Vasconcelos P., Bentz J., Nealson K., Popa R., Kah L.C., Moersch J., Tate C., Day M., Kocurek G., Hallet B., Sletten R., Francis R., McCullough E., Cloutis E., ten Kate I.L., Kuzmin R., Arvidson R., Fraeman A., Scholes D., Slavney S., Stein T., Ward J., Berger J., Moores J.E.
Publicada:
1 ene 2013
Resumen:
By analogy with Earth, methane in the Martian atmosphere is a potential signature of ongoing or past biological activity. During the past decade, Earth-based telescopic observations reported "plumes" of methane of tens of parts per billion by volume (ppbv), and those from Mars orbit showed localized patches, prompting speculation of sources from subsurface bacteria or nonbiological sources. From in situ measurements made with the Tunable Laser Spectrometer (TLS) on Curiosity using a distinctive spectral pattern specific to methane, we report no detection of atmospheric methane with a measured value of 0.18 ± 0.67 ppbv corresponding to an upper limit of only 1.3 ppbv (95% confidence level), which reduces the probability of current methanogenic microbial activity on Mars and limits the recent contribution from extraplanetary and geologic sources.
Filiaciones:
Mahaffy P.R.:
NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Atreya S.K.:
Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109, United States
Flesch G.J.:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
Farley K.A.:
Department of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States
Farley K.:
Department of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States
Mahaffy P.:
NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Flesch G.:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
Webster C.R.:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
Atreya S.:
Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109, United States
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