Cometary activity in 2060 Chiron
Cometary activity in 2060 Chiron
复制标题
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
中科院分区:
文献类型:
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作者:
J. Luu;D. Jewitt
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.