| 光学选类星体样本的光变 |
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| 引用本文： | 黄克谅 周洪楠. 光学选类星体样本的光变[J]. 紫金山天文台台刊, 1999, 18(3): 230-234 |
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| 作者姓名： | 黄克谅 周洪楠 |
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| 作者单位： | 南京师范大学物理系!南京210097 |
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| 摘 要： | 本文报导光学选类星体样本的光变研究结果。利用ＣＣＤ 测光资料，本文研究中等亮类星体样本的长期光变行为。结果表明，大约４０ ％ 的光学选类星体在１８ 年的研究期间内有光变；变光类星体的光变同光度负相关，即愈亮的类星体的光变愈小；光变同红移也可能存在负相关。
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| 关 键 词： | 类星体 光变 |
THE VARIABILITY OF OPTICALLY SELECTED QSO SAMPLE |
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| Huang Ke liang Zhou Hong nan. THE VARIABILITY OF OPTICALLY SELECTED QSO SAMPLE[J]. , 1999, 18(3): 230-234 |
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| Authors: | Huang Ke liang Zhou Hong nan |
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| Abstract: | We report on a variability study of optically selected quasar sample. Using the CCD photometry data, we searched the long term (years) variability of the quasar sample and found that about 40% optically selected quasars varied over a time line of 18 years. A negative correlation between variability and luminosity for variable quasars, i.e. more luminous QSOs show less variability, is found, and a correlation between variability and redshift may exist. |
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| Keywords: | QSOs Variability |
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