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首页> 外文期刊>The Astrophysical journal >X-RAY EMISSION-LINE PROFILE MODELING OF O STARS: FITTING A SPHERICALLY SYMMETRIC! ANALYTIC WIND-SHOCK MODEL TO THE CHANDRA SPECTRUM OF ζ PUPPIS
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X-RAY EMISSION-LINE PROFILE MODELING OF O STARS: FITTING A SPHERICALLY SYMMETRIC! ANALYTIC WIND-SHOCK MODEL TO THE CHANDRA SPECTRUM OF ζ PUPPIS

机译：O型星的X射线发射线轮廓建模：适合球对称！ ζpuppis谱线谱的解析激波模型

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摘要

X-ray emission-line profiles provide the most direct insight into the dynamics and spatial distribution of the hot, X-ray-emitting plasma above the surfaces of OB stars. The O supergiant ζ Puppis shows broad, blueshifted, and asymmetric line profiles, generally consistent with the wind-shock picture of OB star X-ray production. We model the profiles of eight lines in the Chandra HETGS spectrum of this prototypical hot star. The fitted lines indicate that the plasma is distributed throughout the wind starting close to the photosphere, that there is significantly less attenuation of the X-rays by the overlying wind than is generally supposed, and that there is not a strong trend in wind absorption with wavelength.
机译：X射线发射线轮廓可以最直接地洞察OB星表面上方热的X射线发射等离子体的动力学和空间分布。 O超巨型ζPuppis显示宽，蓝移和不对称的线轮廓，通常与OB星X射线产生的风震图像一致。我们对该原型热星的Chandra HETGS光谱中的八条线进行了建模。拟合线表示等离子在接近光球的位置开始分布在整个风中，上方的风对X射线的衰减比通常所设想的要少得多，并且在风的吸收下没有强烈的趋势波长。

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