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arXiv 1801.06152astro-ph.SR
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The Of?麦哲伦星云的p型星:它们有强磁性吗?

The Of?p stars of the Magellanic Clouds: Are they strongly magnetic?

Melissa Munoz, Gregg Wade, Yaël Nazé, Stefano Bagnulo, Joachim Puls

摘要:

所有已知的银河系?p型星被证明拥有强大的、有组织的磁场。最近,5?在麦哲伦星云中发现了p星。他们测量了与斜旋转体模型(ORM)兼容的光度测量\citep{Naze}和光谱测量\citep{Walborn}可变性。然而,它们的磁场还没有被直接探测到。我们已经开发了一种算法,允许光度观测值的合成的基础上的解析动力学磁层(ADM)模型的\citet{Owocki}。我们应用我们的模型OGLE测光,以限制其磁几何形状和表面偶极子强度。我们预测,这些候选的银河系外磁星的磁场强度可能在FORS 2仪器的检测范围内。

英文摘要:

All known Galactic Of?p stars have been shown to host strong, organized, magnetic fields. Recently, five Of?p stars have been discovered in the Magellanic Clouds. They posses photometric \citep{Naze} and spectroscopic \citep{Walborn} variability compatible with the Oblique Rotator Model (ORM). However, their magnetic fields have yet to be directly detected. We have developed an algorithm allowing for the synthesis of photometric observables based on the Analytic Dynamical Magnetosphere (ADM) model of \citet{Owocki}. We apply our model to OGLE photometry in order to constrain their magnetic geometries and surface dipole strengths. We predict that the field strengths for some of these candidate extra-Galactic magnetic stars may be within the detection limits of the FORS2 instrument.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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