RE0751 + 14, the first ‘intermediate’ polar?
RE0751 + 14, the first ‘intermediate’ polar?
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RE0751 + 14，第一个“中间”极地？
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
P. Hakala
中科院分区：
文献类型：
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作者：
S. Rosen;J. Mittaz;P. Hakala
我们目前的光学光谱，多色测光和旋光的新的中间极性，RE 0751 +14，在ROSAT WFC调查发现。它的发射线的翅膀表现出径向速度运动，周期为13.9分钟，确认这是白色矮星的旋转周期。有趣的是，R-和I-波段光度光变曲线揭示了在旋转周期的双峰配置文件。相比之下，B波段光变曲线，至少在我们最长的时间序列中（105小时），显然是由一个14.5分钟，广泛的正弦脉动。有支持的证据，从一个短的非观测在较早的时期，调制与一个稍长的周期比旋转周期作出了越来越多的贡献，在蓝色波长
We present optical spectroscopy, multicolour photometry and polarimetry of the new intermediate polar, RE0751+14, discovered during the ROSAT WFC survey. The wings of its emission lines exhibit radial velocity motion with a period ∼13.9 min, confirming that this is the rotation period of the white dwarf. Intriguingly, the R- and I-band photometric light curves reveal a double-peaked profile at the rotation period. In contrast, the B-band light curve, at least in our longest (∼5 h) time-series in that colour, is apparently dominated by a 14.5-min, broadly sinusoidal pulsation. There is supporting evidence from a short NOT observation at an earlier epoch that a modulation with a slightly longer period than the rotation period makes an increasing contribution at blue wavelengths