ON THE SIZE OF THE BROAD-LINE REGION IN ARAKELIAN-120

被引：20

作者：

PETERSON, BM ^{[1
]}

GASKELL, CM ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 368卷 / 01期

关键词：

GALAXIES; INDIVIDUAL; (ARAKELIAN-120); SEYFERT;

D O I：

10.1086/169677

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze continuum and emission-line variability in ultraviolet and optical spectra of the Seyfert 1 galaxy Akn 120 during an outburst described by Alloin and collaborators. By combing the optical and ultraviolet data, we obtain continuum and emission-line light curves which can be used in a cross-correlation analysis. We thus obtain a lag of 39 +/- 14 days between the continuum and emission-line variations. While the uncertainty in this determination is considerable, lags as large as those expected from light-travel times in broad-line regions predicted by standard photoionization models seem to be unlikely.

引用

页码：152 / 157

页数：6

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