| 光学选类星体样本的光变 |
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| 引用本文： | 卞维豪,黄克谅,周洪楠.光学选类星体样本的光变[J].天文学报,2000,41(3):225-231. |
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| 作者姓名： | 卞维豪 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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| 基金项目： | 国家攀登计划和国家自然科学基金资助项目 |
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| 摘 要： | 利用测光数据研究时间跨度为１８年的光学选类星样本的光变，发现此样本的光变比例约４０％。还发现光变类星体的光变幅与光度反相关，即光度越大，光变越小；且光变幅与红移可能有相关性。
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| 关 键 词： | 类星体 光变 样本 光学 |
| 修稿时间： | 1998-12-10 |
THE VARIABILITY OF OPTICALLY SELECTED QSO SAMPLES |
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| BIAN Wei-Hao,HUANG Ke-Liang,ZHOU Hong-Nan.THE VARIABILITY OF OPTICALLY SELECTED QSO SAMPLES[J].Acta Astronomica Sinica,2000,41(3):225-231. |
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| Authors: | BIAN Wei-Hao HUANG Ke-Liang ZHOU Hong-Nan |
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| Institution: | BIAN Wei-Hao
,HUANG Ke-Liang
,ZHOU Hong-Nan
;(Department of Physics, Nanjing Normal University, Nanjing 210097) |
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| Abstract: | A study of the variability of optically selected quasar samples is presented. By using CCD photometric data, the long term (years) variability of quarsar samples is searched and it is found that about 40 % of optically selected quasars vary in a time scale of 18 years.There is a negative correlation between the variability and luminosity, i.e. the more luminous QSOs show less variability. Besides, a correlation between variability and redshift may exist. |
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| Keywords: | quasar variability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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