Ion Neutral Mass Spectrometer results from the first flyby of Titan

被引：366

作者：

Waite, JH ^{[1
]}

Niemann, H

Yelle, RV

Kasprzak, WT

Cravens, TE

Luhmann, JG

McNutt, RL

Ip, WH

Gell, D

De La Haye, V

Müller-Wordag, I

Magee, B

Borggren, N

Ledvina, S

Fletcher, G

Walter, E

Miller, R

Scherer, S

Thorpe, R

Xu, J

Block, B

Arnett, K

机构：

[1] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA

[4] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[5] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[6] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[7] Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan

[8] Univ London Imperial Coll Sci Technol & Med, Space & Atmospher Phys Grp, London SW7 2BW, England

[9] SW Res Inst, San Antonio, TX 78228 USA

来源：

SCIENCE | 2005年 / 308卷 / 5724期

关键词：

D O I：

10.1126/science.1110652

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 Cassini Ion Neutral Mass Spectrometer (INMS) has obtained the first in situ composition measurements of the neutral densities of molecular nitrogen, methane, molecular hydrogen, argon, and a host of stable carbon-nitrile compounds in Titan's upper atmosphere. INMS in situ mass spectrometry has also provided evidence for atmospheric waves in the upper atmosphere and the first direct measurements of isotopes of nitrogen, carbon, and argon, which reveal interesting clues about the evolution of the atmosphere. The bulk composition and thermal structure of the moon's upper atmosphere do not appear to have changed considerably since the Voyager 1 flyby.

引用

页码：982 / 986

页数：5

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