EPOXI at Comet Hartley 2

被引：398

作者：

A'Hearn, Michael F. ^{[1
]}

Belton, Michael J. S. ^{[2
]}

Delamere, W. Alan ^{[3
]}

Feaga, Lori M. ^{[1
]}

Hampton, Donald ^{[4
]}

Kissel, Jochen ^{[5
]}

Klaasen, Kenneth P. ^{[6
]}

McFadden, Lucy A. ^{[1
,7
]}

Meech, Karen J. ^{[8
]}

Melosh, H. Jay ^{[9
,10
]}

Schultz, Peter H. ^{[11
]}

Sunshine, Jessica M. ^{[1
]}

Thomas, Peter C. ^{[12
]}

Veverka, Joseph ^{[12
]}

Wellnitz, Dennis D. ^{[1
]}

Yeomans, Donald K. ^{[6
]}

Besse, Sebastien ^{[1
]}

Bodewits, Dennis ^{[1
]}

Bowling, Timothy J. ^{[10
]}

Carcich, Brian T. ^{[12
]}

Collins, Steven M. ^{[6
]}

Farnham, Tony L. ^{[1
]}

Groussin, Olivier ^{[13
,14
]}

Hermalyn, Brendan ^{[11
]}

Kelley, Michael S. ^{[1
,15
]}

Li, Jian-Yang ^{[1
]}

Lindler, Don J. ^{[16
]}

Lisse, Carey M. ^{[17
]}

McLaughlin, Stephanie A. ^{[1
]}

Merlin, Frederic ^{[1
,18
]}

Protopapa, Silvia ^{[1
]}

Richardson, James E. ^{[10
]}

Williams, Jade L. ^{[1
]}

机构：

[1] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[2] Belton Space Explorat Initiat LLC, Tucson, AZ 85716 USA

[3] Delamere Support Serv, Boulder, CO 80304 USA

[4] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA

[5] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany

[6] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

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

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

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

[10] Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA

[11] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA

[12] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[13] Univ Aix Marseille 1, Lab Astrophys Marseille, F-13013 Marseille, France

[14] CNRS, F-13013 Marseille, France

[15] NASA Headquarters, Planetary Sci Div, Washington, DC 20546 USA

[16] Sigma Space Corp, Lanham, MD 20706 USA

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

[18] Univ Paris 07, Observ Paris, LESIA, F-92195 Meudon, France

来源：

SCIENCE | 2011年 / 332卷 / 6036期

关键词：

DEEP IMPACT; ICE; PARTICLES; INSTRUMENT;

D O I：

10.1126/science.1204054

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：

Understanding how comets work-what drives their activity-is crucial to the use of comets in studying the early solar system. EPOXI (Extrasolar Planet Observation and Deep Impact Extended Investigation) flew past comet 103P/Hartley 2, one with an unusually small but very active nucleus, taking both images and spectra. Unlike large, relatively inactive nuclei, this nucleus is outgassing primarily because of CO2, which drags chunks of ice out of the nucleus. It also shows substantial differences in the relative abundance of volatiles from various parts of the nucleus.

引用

页码：1396 / 1400

页数：5

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