%PDF-1.5 %âãÏÓ 47 0 obj > endobj 44 0 obj >stream Acrobat Distiller 5.0 (Windows) 2013-07-16T10:19:28Z 2020-05-04T16:09:21-07:00 2020-05-04T16:09:21-07:00 3B2 Total Publishing System 8.07e/W Unicode application/pdf uuid:569afc0f-1dd2-11b2-0a00-3b0a271dd700 uuid:569afc12-1dd2-11b2-0a00-b00000000000 endstream endobj 45 0 obj > endobj 48 0 obj >/Font>/ProcSet[/PDF/Text]>>/Rotate 0/Thumb 32 0 R/Type/Page>> endobj 1 0 obj >/Font>/ProcSet[/PDF/Text/ImageC]/XObject>>>/Rotate 0/Thumb 34 0 R/Type/Page>> endobj 5 0 obj >/Font>/ProcSet[/PDF/Text/ImageC]/XObject>>>/Rotate 0/Thumb 36 0 R/Type/Page>> endobj 10 0 obj >/Font>/ProcSet[/PDF/Text]>>/Rotate 0/Thumb 38 0 R/Type/Page>> endobj 122 0 obj >/ProcSet[/PDF/Text/ImageC]/XObject>>>/Type/Page>> endobj 136 0 obj [142 0 R 143 0 R 144 0 R 145 0 R 146 0 R 147 0 R 148 0 R 149 0 R 150 0 R] endobj 137 0 obj >stream q 87.5 0 0 21.75 72 662.25 cm /Im0 Do Q BT /T1_0 1 Tf 10 0 0 10 280.92899 622 Tm (O of the Martian Atmosphere)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -3.05598 0 Td ( and H)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -16.72492 0 Td (Isotope Ratios of H, C, and O in CO)Tj ET BT /T1_1 1 Tf 8 0 0 8 72 592.99994 Tm (Team)Tj 0 1 TD (Jennifer C. Stern, Lance E. Christensen, Tobias Owen, Heather Franz, Rob\ ert O. Pepin, Andrew Steele and the MSL Science )Tj 0 1.00001 TD (Chris R. Webster, Paul R. Mahaffy, Gregory J. Flesch, Paul B. Niles, Joh\ n H. Jones, Laurie A. Leshin, Sushil K. Atreya,)Tj ET BT /T1_1 1 Tf 8 0 0 8 72 546.99997 Tm (DOI: 10.1126/science.1237961)Tj 5.50301 1 Td ( \(6143\), 260-263.)Tj /T1_0 1 Tf -1.668 0 Td (341)Tj /T1_2 1 Tf -3.83501 0 Td (Science\240)Tj ET BT /T1_1 1 Tf 8 0 0 8 92 442.99973 Tm (the period of early atmospheric loss some 4 billion years ago.)Tj 38.18192 1 Td (O were largely established after)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -2.946 0 Td ( and H)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -34.12392 0 Td (of these meteorites and implies that the current atmospheric reservoirs \ of CO)Tj T* (isotopic ratios measured by SAM with those of martian meteorites, measur\ ed in laboratories on Earth, confirms the origin )Tj 38.79494 1 Td (O. Agreement between the)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -2.946 0 Td ( and H)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -34.73694 0 Td (the same period to determine isotope ratios of H, C, and O in atmospheri\ c CO)Tj 21.17697 1.00001 Td ( \(p. 260\) used data from another of SAM's instruments obtained around)Tj /T1_3 1 Tf -2.27899 0 Td (et al.)Tj /T1_0 1 Tf -4.22299 0 Td (Webster )Tj /T1_1 1 Tf -14.67499 0 Td (August and 21 November 2012. )Tj 22.12097 1 Td (, based on data from one of SAM's instruments, obtained between 31)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -9.782 0 Td (Ar and C and O in CO)Tj 0.33333 Ts -1.112 0 Td (36)Tj 0 Ts -1.278 0 Td (Ar/)Tj 0.33333 Ts -1.11199 0 Td (40)Tj 0 Ts -8.28098 0 Td (measurements of )Tj 37.1459 1 Td (, and CO\) and isotope)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -1.33399 0 Td (, O)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -2.834 0 Td (, Ar, N)Tj -0.33333 Ts -0.556 0 Td (2)Tj 0 Ts -31.30991 0 Td (volume-mixing ratios of Mars' five major atmospheric constituents \(CO)Tj 44.07491 1.00001 Td ( \(p. 263\) present)Tj /T1_3 1 Tf -2.279 0 Td (et al.)Tj /T1_0 1 Tf -4.05597 0 Td (Mahaffy )Tj /T1_1 1 Tf -37.73994 0 Td (designed to study the chemical and isotopic composition of the martian a\ tmosphere. )Tj 3.125 1 Td (The Sample Analysis at Mars \(SAM\) instrument on the Curiosity rover th\ at landed on Mars in August last year is)Tj /T1_0 1 Tf -3.125 1 Td (Mars' Atmosphere from Curiosity)Tj ET BT /T1_0 1 Tf 6 0 0 6 79 377 Tm (ARTICLE TOOLS)Tj ET BT 0 0 1 rg /T1_1 1 Tf 8 0 0 8 187 375 Tm (http://science.sciencemag.org/content/341/6143/260)Tj ET BT 0 g /T1_0 1 Tf 6 0 0 6 79 334.99997 Tm (MATERIALS)Tj T* (SUPPLEMENTARY )Tj ET BT 0 0 1 rg /T1_1 1 Tf 8 0 0 8 187 330.99997 Tm (http://science.sciencemag.org/content/suppl/2013/07/17/341.6143.260.DC1)Tj 0 1 TD (http://science.sciencemag.org/content/suppl/2013/07/18/341.6143.260.DC2)Tj ET BT 0 g /T1_0 1 Tf 6 0 0 6 79 292.99997 Tm (CONTENT)Tj 0 1.00001 TD (RELATED )Tj ET BT 0 0 1 rg /T1_1 1 Tf 8 0 0 8 187 288.99997 Tm (http://science.sciencemag.org/content/sci/341/6143/263.full)Tj 0 1 TD (http://science.sciencemag.org/content/sci/341/6143/299.2.full)Tj ET BT 0 g /T1_0 1 Tf 6 0 0 6 79 257 Tm (REFERENCES)Tj ET BT 0 0 1 rg /T1_1 1 Tf 8 0 0 8 187 246.99997 Tm (http://science.sciencemag.org/content/341/6143/260#BIBL)Tj 0 g T* (This article cites 32 articles, 10 of which you can access for free)Tj ET BT /T1_0 1 Tf 6 0 0 6 79 221 Tm (PERMISSIONS)Tj ET BT 0 0 1 rg /T1_1 1 Tf 8 0 0 8 187 219 Tm (http://www.sciencemag.org/help/reprints-and-permissions)Tj ET BT /T1_1 1 Tf 8 0 0 8 193.38391 120 Tm (Terms of Service)Tj 0 g -15.17299 0 Td (Use of this article is subject to the )Tj ET 72 106 m 522 106 l 0 0 m S BT ET BT /T1_1 1 Tf 8 0 0 8 357.45605 85.99997 Tm ( is a registered trademark of AAAS.)Tj /T1_2 1 Tf -3.55701 0 Td (Science)Tj /T1_1 1 Tf -32.125 0 Td (Science, 1200 New York Avenue NW, Washington, DC 20005. The title )Tj 3.83501 1 Td (\(print ISSN 0036-8075; online ISSN 1095-9203\) is published by the Amer\ ican Association for the Advancement of)Tj /T1_2 1 Tf -3.83501 0 Td (Science )Tj ET BT /T1_1 1 Tf 8 0 0 8 72 72 Tm (Copyright \251 2013, American Association for the Advancement of Science\ )Tj ET BT /T1_1 1 Tf 0 -8 8 0 576 317.9801 Tm (on May 4, 2020)Tj -0.278 0 Td ( )Tj 0 0 1 rg -13.50598 0 Td (http://science.sciencemag.org/)Tj 0 g -8.11398 0 Td (Downloaded from )Tj ET endstream endobj 141 0 obj >/Filter/FlateDecode/Height 87/Length 19684/Name/X/Subtype/Image/Type/XObject/Width 350>>stream H‰ì—yTSÙÇß½Ia "6p\P縠x¦:ÅZµ.Su¬k­:ê8ud,EíèԺУ­:xtÆSÛÇVk­Ë9@‘¡ ‚ÊnaÉúîí}/ ‹Òž6¼GþÈûÀy„@îï{_r¿¿ïcLõ"ºÊbFSgÒjÌêzÔÖ"UøH½}¥>þ2¿þ´ŸòÿZ 5¿f @a,uWP24 jѨï\i-~Œ¢=£ã=‡Op´(rªw]EQÓýÚ‡¹MyƧHµ4EŽ5 (HQ_Ú-*P1.Ö#*Úkb"íðß×Ôf_+XµA¾“Õ†Kóž’$ôFxçUFJeF¦¾¢q·‚ À{vdÈÆžcg8ZˆS# 3˜Õ_k¸–¥ý烎¡X `9ß'‚pò à(÷á3u†_âOd}úu»vn|TSI# !y¥ £˜3û|ß].ÔF„¡hý{U_åJ”AÛ-ÁìM0bD¬22}[Àâ-(âÔäUç~[yâTk‰–|ê‰H mÑLú;ƶc 0›X» ÿ¹–?1³A€ràæ?oÆ€UÛ]C:/^ž²úÙ‘,7(Áìa"ÿŒGüq¯ï»?b#Qò‹Uœ¿ïa‡S’ îÊÞL6ù¹ÏÌÅ)âÌðî$ç—Hm¼[ANºŒûØc®Ê tPÄŽvU¤¤Rl2!½ÎÔÔØVV¦{^e(Ô¸^I³—9D¤ˆ“ã3”l]ôòì]¤\3$ãƒ!ßi¡¡;v{Ž™þ?.Ò”}­æë3µçî1ÓäìØü,ER‡×Ôà¦[åÖ^kØ4ìØNÿoàk#‚bª™7f¢IÈÕy‚`aÓÀ¶éºu^ÐÇG¦UĉáË W&Ö\y,·$dîä’MÞј[M³Ãi¬Ä€#DQ– ¥ýLY2Cä‘íýmâe#BÓüàV~â2`ls~s  W·”Ë& =xÑAJEœ^œ¡dÓü™ßÉ¡Ø>çäS=`åÔðý_ödÙg©k+g¯‘qæÀÒÞaÙ†Kü‚½gˆøbKÀ’­=ÜEï Íù[þ> û ë@ÔA§Q‚bg(