哈雷彗星的JHK光度和1.3—2.6微米分光观测结果及分析

本文给出哈雷彗星在1986年3月25日至4月2日之间JHK波段测光和1.3—2.6微米分光观测结果。测光结果表明,3月22日彗星爆发在近红外波段也造成了明显的光变,但恢复正常光度的时间要滞后一些,且光变较之可见光波段要平缓.并指出在爆发期间,彗星除光变外尚有色变。分光观测到彗星在1.4、1.9微米的水发射线和位于2.6微米之外的可能的OH发射线。 

Results and Analysis of Infrared Photometry and Spectrophotometry for the Halley's Comet

From Mar.25-Apr.3 of 1986 some observations of Halley's Comet in the near infrared region ware made at Yunnan Observatory.The instrument used in the observations was an infrared photometer-spectrophotometer with J,H,and K standard filters and a CVF 1.3-2.6 Urn,Δλ/λ=2%).From results in the J,H and K bands it is clear that all infrared magnitudes of Halley's Comet were going to be faint during the period of observed time.Combined with our previous,data in the observations of Halley's Comet by the photoelectric photometry,it could be considered that this was the result of an outburst in the Comet perhaps just before infrared observation time.From results of the CVF observation in the 1.3-2.6μm it is obvious that some emissions at 1.4,1.9 and beyond 2.6μm appeared during observations.It seems that the emissions at 1.4 and 1.9μm came from H₂O and other possibly came from OH.