Monte Carlo radiative transfer in protoplanetary disks
Monte Carlo radiative transfer in protoplanetary disks
复制标题
原行星盘中的蒙特卡罗辐射传输
DOI：
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发表时间：
2006
期刊：
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通讯作者：
P. Bastien
中科院分区：
文献类型：
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作者：
C. Pinte;F. Ménard;G. Duchêne;P. Bastien
目标：我们提出了一种基于蒙特卡罗方法的新的连续 3D 辐射传输代码 MCFOST。 MCFOST 可用于计算 (i) 散射光和/或热发射中的单色图像； (ii) 偏振图； (iii) 干涉能见度； (iv) 光谱能量分布； (v)原行星盘的尘埃温度分布。方法： 在MCFOST中对标准蒙特卡罗方法进行了几项改进，以提高效率并减少收敛时间，包括波长分布调整、平均强度计算和辐射场的自适应采样。使用 2D 磁盘配置根据先前定义的基准测试代码的可靠性和效率。 MCFOST 和基准测试中包含的其他代码计算的温度和 SED 之间没有发现显着差异（不超过 10%，通常要小得多）。结果： 。介绍了斯皮策可探测到的年轻恒星周围最低盘质量的研究，并将“代表性”参数盘的颜色与位于附近恒星形成区域的类太阳年轻恒星的最新 IRAC 和 MIPS 斯皮策颜色进行了比较。
Aims.We present a new continuum 3D radiative transfer code, MCFOST, based on a Monte-Carlo method. MCFOST can be used to calculate (i) monochromatic images in scattered light and/or thermal emission; (ii) polarisation maps; (iii) interferometric visibilities; (iv) spectral energy distributions; and (v) dust temperature distributions of protoplanetary disks. Methods: .Several improvements to the standard Monte Carlo method are implemented in MCFOST to increase efficiency and reduce convergence time, including wavelength distribution adjustments, mean intensity calculations, and an adaptive sampling of the radiation field. The reliability and efficiency of the code are tested against a previously-defined benchmark, using a 2D disk configuration. No significant difference (no more than 10% and usually much less) is found between the temperatures and SEDs calculated by MCFOST and by other codes included in the benchmark. Results: . A study of the lowest disk mass detectable by Spitzer, around young stars, is presented and the colours of "representative" parametric disks compared to recent IRAC and MIPS Spitzer colours of solar-like young stars located in nearby star-forming regions.