67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio

被引：270

作者：

Altwegg, K. ^{[1
]}

Balsiger, H. ^{[1
]}

Bar-Nun, A. ^{[2
]}

Berthelier, J. J. ^{[3
]}

Bieler, A. ^{[1
,4
]}

Bochsler, P. ^{[1
]}

Briois, C. ^{[5
]}

Calmonte, U. ^{[1
]}

Combi, M. ^{[4
]}

De Keyser, J. ^{[6
]}

Eberhardt, P. ^{[1
]}

Fiethe, B. ^{[7
]}

Fuselier, S. ^{[8
]}

Gasc, S. ^{[1
]}

Gombosi, T. I. ^{[4
]}

Hansen, K. C. ^{[4
]}

Haessig, M. ^{[1
,8
]}

Jaeckel, A. ^{[1
]}

Kopp, E. ^{[1
]}

Korth, A. ^{[9
]}

Leroy, L. ^{[1
]}

Mall, U. ^{[9
]}

Marty, B. ^{[10
]}

Mousis, O. ^{[11
]}

Neefs, E. ^{[6
]}

Owen, T. ^{[12
]}

Reme, H. ^{[13
,14
]}

Rubin, M. ^{[1
]}

Semon, T. ^{[1
]}

Tzou, C. -Y. ^{[1
]}

Waite, H. ^{[8
]}

Wurz, P. ^{[1
]}

机构：

[1] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland

[2] Tel Aviv Univ, Dept Geosci, IL-69978 Tel Aviv, Israel

[3] LATMOS, F-94100 St Maur, France

[4] Univ Michigan, Dept Atmospher Ocean & Space Sci, Hayward, MI USA

[5] Univ Orleans, Lab Phys & Chim Environm & Espace LPC2E, CNRS, UMR 6115, F-45067 Orleans, France

[6] IASB, BIRA, Space Phys Div, B-1180 Brussels, Belgium

[7] Tech Univ Carolo Wilhelmina Braunschweig, Inst Comp & Network Engn IDA, D-38106 Braunschweig, Germany

[8] SW Res Inst, Dept Space Sci, San Antonio, TX 78228 USA

[9] Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Germany

[10] Univ Lorraine, Ctr Rech Petrograph & Geochim, CRPG, CNRS, F-54501 Vandoeuvre Les Nancy, France

[11] Univ Franche Comte, Inst Univers Transport Interfaces Nanostruct Atmo, CNRS, INSU,UMR 6213, F-6213 Besancon, France

[12] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

[13] Univ Toulouse 3, Univ Toulouse, OMP, IRAP, Toulouse, France

[14] CNRS, IRAP, F-31028 Toulouse 4, France

来源：

SCIENCE | 2015年 / 347卷 / 6220期

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

OORT CLOUD; SOLAR-SYSTEM; NOBLE-GASES; WATER; DEUTERIUM; ORIGIN; ATMOSPHERE; NITROGEN; EARTH;

D O I：

10.1126/science.1261952

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The provenance of water and organic compounds on Earth and other terrestrial planets has been discussed for a long time without reaching a consensus. One of the best means to distinguish between different scenarios is by determining the deuterium-to-hydrogen (D/H) ratios in the reservoirs for comets and Earth's oceans. Here, we report the direct in situ measurement of the D/H ratio in the Jupiter family comet 67P/Churyumov-Gerasimenko by the ROSINA mass spectrometer aboard the European Space Agency's Rosetta spacecraft, which is found to be (5.3 +/- 0.7) x 10(-4)-that is, approximately three times the terrestrial value. Previous cometary measurements and our new finding suggest a wide range of D/H ratios in the water within Jupiter family objects and preclude the idea that this reservoir is solely composed of Earth ocean-like water.

引用

页数：3

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