摘要
对所收集的ＢＬ Ｌａｃ天体的红外资料（Ｆａｎ＆ Ｌｉｎ １９９９）进行讨论，发现具有红移的 ２７个 ＢＬ Ｌａｃ天体的红外谱指数与红移之间有强相关，这种强相关也许意味着谱存在演化效应。
In this paper, based on the historical infrared (JHK) data compiled by Fan & Lin (1999), the color index proper- ties are discussed for 27 radio selected BL Lacertae objects (RBLs) . A strong correlation is found between color indices and red- shift, which probably suggests an effect of evolution.
出处
《广州大学学报（综合版）》
2001年第5期13-16,共4页
Journal of Guangzhou University
基金
国家科技部"973计划"[NKBRSF G19990754]
国家自然科学基金(19973001)
