论文标题
CO+ COMA彗星29p/Schwasmann-Wachmann的动力学1
Dynamics of the CO+ coma of comet 29P/Schwasmann-Wachmann 1
论文作者
论文摘要
在2007 - 2009年期间，在俄罗斯科学学院特殊天体天文台使用6-M大型望远镜Alt-Azimuth观察到CO+发射和连续UUM中观察到Comet-Centaur 29p/Schwassmann-Wachmann 1。我们分析了Co+和Dust Coma的形态。昏迷中的灰尘和co+离子的分布并不相似，并且取决于彗星活动水平。与尘埃连续体相比，CO+离子更集中在细胞核上。 CO+的色谱柱密度得出，发现从3.7*10^9到4.3*10^10离子CM^-2。 CO+的生产率估计为（7.01）*10^24至（1.15）*10^26离子S^-1。我们讨论了彗星材料电离的可能机制，并表明太阳风颗粒的影响电离可能是大型地中心距离的主要电离机理。
Comet-centaur 29P/Schwassmann-Wachmann 1 was observed in CO+ emission and contin-uum during 2007-2009 using the 6-m Big Telescope Alt-azimuth at the Special Astrophysical Observatory of the Russian Academy of Sciences. We analysed the morphology of the CO+ and dust coma. The distributions of dust and CO+ ions in the coma are not similar and vary depending on the level of comet activity. CO+ ions are more concentrated towards the nucleus than the dust continuum. The column density of the CO+ was derived and found to vary from 3.7*10^9 to 4.3*10^10 ions cm^-2. The production rate of CO+ was estimated to be from (7.01)*10^24 to (1.15)*10^26 ions s^-1. We discuss possible mechanisms for the ionization of cometary material and show that impact ionization by solar wind particles is probably the main ionization mechanism at large heliocentric distances.
