Deep Impact:: Observations from a worldwide Earth-based campaign
Deep Impact:: Observations from a worldwide Earth-based campaign
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DOI：
10.1126/science.1118978
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发表时间：
2005-10-14
期刊：
影响因子：
56.9
通讯作者：
Zucconi, JM
中科院分区：
文献类型：
--
作者：
Meech, KJ;Ageorges, N;Zucconi, JM
2005年7月4日，世界各地和太空中的许多天文台观测到了深度撞击9P/Temper1彗星或其余波。这是一场史无前例的协同观测活动。这些数据表明：(1)撞击后有与撞击前不同成分的新物质；(2)喷出物中的尘埃质量与气体质量的比率比撞击前大得多；(3)新的活动只持续了几天，到7月9日，彗星的行为与撞击前的行为没有什么区别；(4)出现了有趣的瞬变现象，可能与陨石坑物理有关。
On 4 July 2005, many observatories around the world and in space observed the collision of Deep Impact with comet 9P/Tempet 1 or its aftermath. This was an unprecedented coordinated observational campaign. These data show that (i) there was new material after impact that was compositionally different from that seen before impact; (ii) the ratio of dust mass to gas mass in the ejecta was much larger than before impact; (iii) the new activity did not last more than a few days, and by 9 July the comet's behavior was indistinguishable from its pre-impact behavior; and (iv) there were interesting transient phenomena that may be correlated with cratering physics.