Depleted Carbon Monoxide in Fragment C of the Jupiter-Family Comet 73P/Schwassmann-Wachmann 3
Depleted Carbon Monoxide in Fragment C of the Jupiter-Family Comet 73P/Schwassmann-Wachmann 3
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木星族彗星 73P/Schwassmann-Wachmann 3 碎片 C 中的贫化一氧化碳
DOI：
10.1086/518716
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
M. Mumma
中科院分区：
文献类型：
--
作者：
M. DiSanti;W. M. Anderson;G. Villanueva;B. Bonev;K. Magee;E. Gibb;M. Mumma
在夏威夷莫纳克亚山的美国航天局IRTF使用低温中阶梯摄谱仪，对最近分裂的彗星族73 P/Schwassmann-Wachmann 3号彗星2006年出现时的碎片C中的一氧化碳排放进行了观测。在4.65 μm附近用H2O同时探测显示CO高度贫化，与0.5% ± 0.13%的混合比一致。沿着耗尽的CH 3OH和接近正常的HCN，这可能表明这颗彗星形成于内侧巨行星区域，或者，它形成的相对较晚，在原太阳星云显著清除之后。
Carbon monoxide emission was targeted in fragment C of the recently split Jupiter-family comet 73P/Schwassmann-Wachmann 3 during its 2006 apparition, using the Cryogenic Echelle Spectrograph (CSHELL) at the NASA IRTF on Mauna Kea, Hawaii. Simultaneous sounding with H2O near 4.65 μm revealed highly depleted CO, consistent with a mixing ratio of 0.5% ± 0.13%. Along with depleted CH3OH but nearly normal HCN, this may indicate that this comet formed in the inner giant planets' region or, alternatively, that it formed relatively late, after significant clearing of the protosolar nebula.