Submillimeter Wave Astronomy Satellite Observations of Comet 9P/Tempel 1

被引：0
|
作者：
Bensch, F. [1 ,2 ]
Melnick, G. J. [1 ]
Neufeld, D. A. [3 ]
Harwit, M. [4 ]
Snell, R. L. [5 ]
Patten, B. M. [1 ]
Tolls, V. [1 ]
机构：
[1] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
[2] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany
[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[4] Cornell Univ, Washington, DC 20024 USA
[5] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
来源：
DEEP IMPACT AS A WORLD OBSERVATORY EVENT: SYNERGIES IN SPACE, TIME, AND WAVELENGTH | 2009年
关键词：
DEEP-IMPACT; COMET-9P/TEMPEL-1; NUCLEUS;
D O I：
10.1007/978-3-540-76959-0_28
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present observations of the 1(10)-1(01) ortho-water ground-state rotational transition in comet 9P/Tempel 1 made with the NASA Submillimeter Wave Astronomy Satellite (SWAS). The SWAS monitoring covered a 3-month period from June to August 2005 and included observations of the comet's activity during the collision of the Deep Impact spacecraft with the nucleus on 4 July 2005. No excess emission from the material ejected by the impactor was detected and we derive an upper limit; of 1.8 x 10(7) kg on the vaporized water ice. However, the water production rate of the comet shows large natural variations of up to a factor of three throughout the 3-month monitoring period. The total amount of water vaporized between 5 June and 1 September 2005 is 4.5 x 10(34) molecules (similar to 1.3 x 10(9) kg) and we estimate that 9P/Tempel 1. has lost as much as N similar to 10(35) molecules during its 2005 apparition.
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页码：221 / +
页数：2
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