Cometary activity in 2060 Chiron

Cometary activity in 2060 Chiron
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凯龙星 2060 年的彗星活动

DOI:
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发表时间:
1990
期刊:
影响因子:
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通讯作者:
D. Jewitt
D. Jewitt
中科院分区:
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文献类型:
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作者:
J. Luu;D. Jewitt

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本文报道了用CCD测光和分光技术对2060年凯龙星彗星活动进行的为期2年(1988- 1990)的观测结果。测光观测包括一个新的旋转光曲线的凯龙,一个新的完善的旋转周期,其长期的测光行为和表面亮度轮廓的最新发展,深图像的彗差的凯龙,和窄带图像的波长范围从3200到6840 A。光谱数据包括中等分辨率CCD光谱(10-20 A FWHM)。主要的结果包括检测脉冲增亮的时间尺度上的小时,证据的长期变化的蓝色部分的反射率光谱的核,没有证据的瑞利散射在近紫外线,和一个上限的柱密度的CO(+)离子在彗发。参考文献46篇。
Results of a 2-yr (1988-90) investigation of cometary activity in 2060 Chiron based on CCD photometry and spectroscopy are reported. The photometry observations include a new rotational light curve of Chiron, a newly refined rotation period, recent developments of its long-term photometric behavior and surface brightness profiles, a deep image of the coma of Chiron, and narrowband images at wavelengths ranging from 3200 to 6840 A. The spectroscopic data include moderate resolution CCD spectra (10-20 A FWHM). Major results include the detection of impulsive brightening on a time scale of hours, evidence for a secular change in the blue portion of the reflectivity spectrum of the nucleus, no evidence for Rayleigh scattering in the near ultraviolet, and an upper limit of the column density of CO(+) ions in the coma. 46 refs.