论文标题
Romanov V48：期间间隙中的异常中级极性
Romanov V48: unusual intermediate polar in the period gap
论文作者
论文摘要
我们研究了Romanov V48，该V48被认为是低于周期的极性（轨道周期为0.0420991 d）。我们分析了公开可用的Zwicky瞬态设施数据，并发现该对象是轨道周期为0.102312 d（在周期间隙）和0.0420991 d的中间极性。自旋变异的幅度非常大（0.6 mag），并且已确认轮廓随BEAT周期为0.071534 d而变化。自旋和轨道周期之间的比率很大，系统类似于周期间隙以下的中间极性DW CNC。然而，罗曼诺夫V48的红外排放无法通过次级辐射来解释。红外过量和光谱能量分布的形状类似于极点，这表明Romanov V48中的发射机制与极点相似。 Romanov V48可能是中间极点和极点之间的中间物体。
We studied Romanov V48, which had been considered as a possible polar below the period minimum (orbital period of 0.0420991 d). We analyzed the publicly available Zwicky Transient Facility data and found that this object is an intermediate polar with an orbital period of 0.102312 d (in the period gap) and a spin period of 0.0420991 d. The amplitude of the spin variation was very large (0.6 mag) and the profile has been confirmed to vary with the beat period of 0.071534 d. The ratio between the spin and orbital periods was large and the system resembles the intermediate polar DW Cnc below the period gap. Infrared emission from Romanov V48, however, could not be explained by radiation from the secondary. The infrared excess and the shape of the spectral energy distribution resembled those of polars, suggesting that the emission mechanism in Romanov V48 is similar to those of polars. Romanov V48 may be an intermediate object between intermediate polars and polars.
