Is 1308+326 A BL Lacertae object or a quasar?
Is 1308+326 A BL Lacertae object or a quasar?
复制标题
1308 326 BL Lacertae 天体还是类星体？
DOI：
10.1086/172722
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
J. Wardle
中科院分区：
文献类型：
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作者：
D. Gabuzda;R. Kollgaard;D. H. Roberts;J. Wardle
活动星系1308+326（z = 0.996）被归类为BL蝎虎座天体，因为它几乎没有特征的光学连续谱和高而可变的偏振。然而，新的VLBI偏振图像1308+326，显示了VLBI偏振结构和试探性的超光速运动，这是类星体的特征，而不是BL Lacertae对象。这些数据有力地表明，这个源只是一个类星体，其发射线的等效宽度很小。我们讨论的可能性，即光学连续增强微透镜在前景星系，建议由Stickel等人。
The active galaxy 1308+326 (z = 0.996) has been classified as a BL Lacertae object because of its nearly featureless optical continuum and high and variable polarization. New VLBI polarization images of 1308+326, however, show both VLBI polarization structure and tentative superluminal motions that are characteristic of quasars rather than BL Lacertae objects. These data strongly suggest that this source is simply a quasar with emission lines of small equivalent width. We discuss the possibility that the optical continuum is enhanced by microlensing in a foreground galaxy, as suggested by Stickel et al.