蓝宁386：矮新星，SW六分仪星，还是两者兼而有之？
The Eclipsing Cataclysmic Variable Lanning 386: Dwarf Nova, SW Sextantis Star, or Both?
摘要：
我们提出的光度学和光谱学的怀疑激变变量（CV）朗宁386。我们确认它是一个CV，并观察深食，从中我们确定轨道周期Porb为0.1640517 +-0.0000001 d（= 3.94 h）。在两个观测季节的光度监测显示，一个非常活跃的系统与频繁爆发的可变幅度，高达约。在平静的光谱是典型的矮新星，但在其高状态的系统显示出强烈的HeII发射和广泛的CIV沃尔夫-拉叶特功能。这是不寻常的矮新星爆发，并表明高激发。在其高状态下，系统显示出一些让人想起SW Sextantis类型CV的特征，但缺乏其他特征。我们讨论这个令人困惑的对象的分类。
英文摘要：
We present photometry and spectroscopy of the suspected cataclysmic variable (CV) Lanning 386. We confirm that it is a CV, and observe deep eclipses, from which we determine the orbital period Porb to be 0.1640517 +- 0.0000001 d (= 3.94 h). Photometric monitoring over two observing seasons shows a very active system with frequent outbursts of variable amplitude, up to approx. 2 mag. The spectrum in quiescence is typical of dwarf novae, but in its high state the system shows strong HeII emission and a broad CIV Wolf-Rayet feature. This is unusual for dwarf novae in outburst and indicates a high excitation. In its high state the system shows some features reminiscent of an SW Sextantis-type CV, but lacks others. We discuss the classification of this puzzling object.
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