The oxygen isotopic composition (18O/16O) in the dust of comet 67P/Churyumov-Gerasimenko measured by COSIMA on-board Rosetta

被引：13

作者：

Paquette, J. A. ^{[1
]}

Engrand, C. ^{[2
]}

Hilchenbach, M. ^{[1
]}

Fray, N. ^{[3
,4
]}

Stenzel, O. J. ^{[1
]}

Silen, J. ^{[5
]}

Ryno, J. ^{[5
]}

Kissel, J. ^{[1
]}

机构：

[1] Max Planck Inst Sonnensyst Forsch, Justus von Liebig Weg 3, D-37077 Gottingen, Germany

[2] Univ Paris Saclay, CSNSM, CNRS, IN2P3,Univ Paris Sud,UMR8609, Bat 104, F-91405 Orsay, France

[3] Univ Paris Est Creteil, UMR CNRS 7583, LISA, F-94000 Creteil, France

[4] Univ Paris Diderot, Inst Pierre Simon Laplace, F-94000 Creteil, France

[5] Finnish Meteorol Inst, Observat Serv, Erik Palmenin Aukio 1, FI-00560 Helsinki, Finland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 477卷 / 03期

关键词：

comets: general; comets: individual: 67P/Churyumov-Gerasimenko; planetary systems; INTERPLANETARY DUST; SOLAR-SYSTEM; ANTARCTIC MICROMETEORITES; MASS-SPECTROMETER; 81P/WILD; PARTICLES; RATIOS; WATER; STARDUST; MATTER;

D O I：

10.1093/mnras/sty560

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The oxygen isotopic ratio O-18/O-16 has been measured in cometary gas for a wide variety of comets, but the only measurements in cometary dust were performed by the Stardust cometary sample return mission. Most such measurements find a value of the ratio that is consistent with Vienna Standard Mean Ocean Water (VSMOW) within errors. In this work we present the result of a measurement, using the COSIMA (the COmetary Secondary Ion Mass Analyser) instrument on the Rosetta orbiter, of the oxygen isotopic ratio in dust from Comet 67P/Churyumov-Gerasimenko. Measuring the O-18/O-16 ratio with COSIMA is challenging for a number of reasons, but it is possible with a reasonable degree of precision. We find a result of 2.00 x 10(-3) +/- 1.2 x 10(-4), which is consistent within errors with VSMOW.

引用

页码：3836 / 3844

页数：9

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