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THE BROAD-BAND CCD PHOTOMETRY AND DUST PRODUCTION RATES OF COMET HALE-BOPP
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作者 Huang Keliang 1 Hu Jingyao 2 Zhou Hongnan 1 (1. Department of Physics, Nanjing Normal University, Nanjing 210097) (2. Beijing Observatory, Chinese Academy of Sciences, Beijing 100080) 《中国科学院上海天文台年刊》 2000年第S1期44-50,共7页
Based upon broad-band CCD observation data of comet Hale-Bopp obtained by a 60cm telescope at Xinglong Station of Beijing Astronomical Observatory during March-August, 1996, the photometric results of comet Hale-Bopp ... Based upon broad-band CCD observation data of comet Hale-Bopp obtained by a 60cm telescope at Xinglong Station of Beijing Astronomical Observatory during March-August, 1996, the photometric results of comet Hale-Bopp are reported. Using the photometric results, the dust production rate, radius and mass of nucleus of comet Hale-Bopp are estimated as follows: dM/dt~1.5×10 5 kgs -1, R n~35.5km, and M n~5.65×10 16kg. 展开更多
关键词 comet hale-bopp - CCD PHOTOMETRY - DUST production rate
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OUTBURSTS OF COMET HALE-BOPP
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作者 Yang Benyou 1 Zhang Chunsheng 1 Fan Yixin 1 Cai Hongfang 1 Sun Shousheng 2 Zhang Yan 2 Sun Linan 2 (1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008) (2. Qingdao Station of Purple Mountain Observatory, Qingdao 266 《中国科学院上海天文台年刊》 2000年第S1期87-91,共5页
In this paper, we present the observations of Comet Hale-Bopp by means of photoelectric and photographic photometry during the period from September to November of 1996. It is shown that there appears to have been 3 o... In this paper, we present the observations of Comet Hale-Bopp by means of photoelectric and photographic photometry during the period from September to November of 1996. It is shown that there appears to have been 3 outbursts around 24 Sept., 26 Oct. and 13 Nov.; and it is also possible that an event of outburst has taken place around 9 Oct. 展开更多
关键词 comet hale-bopp - OUTBURST - PHOTOMETRY
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SEPARATION OF JETS FROM COMET HALE-BOPP'S COMA BY WAVELET METHOD
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作者 Tao Jun Qian Bochen Tang Yuan (Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030) 《中国科学院上海天文台年刊》 2000年第S1期101-103,共3页
A new multiscale technique, the wavelet transform, is applied to the study of jets of comet. It has the advantage to show the features of jets.
关键词 comet hale-bopp - WAVELET - JET
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THE CCD PHOTOMETRIC OBSERVATIONS OF COMET C/1995 O1 (HALE-BOPP)
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作者 Zhou Hongnan 1 Huang Keliang 2 Wang Yu 1 Zhou Qinglin 1 (1. Department of Astronomy, Nanjing University, Nanjing 210093) (2. Department of Physics, Nanjing Normal University, Nanjing 210097) 《中国科学院上海天文台年刊》 2000年第S1期51-54,共4页
The CCD photometric observation of secular periodic comet C/1995 O1 (Hale-Bopp) was carried out at the Sheshan Station of Shanghai Observatory of China. We obtained 23 CCD images on 1996 March 11, April 22 and May 22.... The CCD photometric observation of secular periodic comet C/1995 O1 (Hale-Bopp) was carried out at the Sheshan Station of Shanghai Observatory of China. We obtained 23 CCD images on 1996 March 11, April 22 and May 22. We derived the magnitude of the cometary nucleus in V, R bands, and estimated the lower limits of cometary mass and size. The results show that the diameter of nucleus ≈ 5 ~ 10km, which corresponds to a mass of 2 × 10 12~ 3 × 10 13 kg for different parameters when the bulk density is assumed to 1000 kg·m -3. 展开更多
关键词 comet: C/ 1995 O1 (hale-bopp) - CCD PHOTOMETRY - Mass and size of cometary nucleus
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OBSERVATION OF AN OUTBURST OF COMET HALE-BOPP IN SEPTEMBER 1996
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作者 Tao Jun Qian Bochen Gu Minfeng Tang Yuan Song Baojun (Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030) 《中国科学院上海天文台年刊》 2000年第S1期76-86,共11页
The light curve and images of comet Hale-Bopp(C/1995 O1) in Sept. 1996 are studied. It is found that an outburst happened in Sept. 10-11, 1996. The magnitude of the inner coma region increased by 2.1 mag. and 1.4 mag.... The light curve and images of comet Hale-Bopp(C/1995 O1) in Sept. 1996 are studied. It is found that an outburst happened in Sept. 10-11, 1996. The magnitude of the inner coma region increased by 2.1 mag. and 1.4 mag. on these two days, respectively. Two globular ejecta were found near the nucleus of the comet in Sept.10 and 11, 1996. By extropolating backward from the ejecta, it is found that the initial time of the outburst was on Sept. 9, 1996 (9.5±0.2UT). The physical reason for this outburst is still uncertain. The projected radial velocities of ejecta are 120m/s and 97m/s. 展开更多
关键词 comet C/1995 O1 (hale-bopp) - LIGHT CURVE - OUTBURST
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