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首页> 外文期刊>The Astrophysical journal >HERSCHEL PHOTOMETRY OF DISKS AROUND LOW-MASS STARS IN THE R CrA CLOUD*
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HERSCHEL PHOTOMETRY OF DISKS AROUND LOW-MASS STARS IN THE R CrA CLOUD*

机译:R CrA云中低质量恒星周围圆盘的赫氏光度法*

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摘要

We report photometric results from a subset of a Herschel-PACS program to observe cool dust in disks around low-mass stars as a complement to our earlier program to measure far-infrared emission from brown dwarfs. In this latest study we observed five low-mass objects in the nearby R Corona Australis region and detected at least three at 70 μm. Using a Monte Carlo radiative transfer code we have investigated the disk masses and geometry based on detailed spectral energy distribution (SED) modeling, and we compare these new results to those from our earlier larger sample of brown dwarfs. In particular, our SED analysis for these five objects shows again that disk geometries of brown dwarfs or low-mass stars are generally similar to their higher mass counterparts like T Tauri disks, but the range of disk mass extends to well below the value found in T Tauri stars.
机译:我们报告了Herschel-PACS程序的一个子集的光度结果,该程序用于观察低质量恒星周围圆盘中的冷尘,作为对我们先前的程序的补充,该程序用于测量褐矮星的远红外辐射。在这项最新研究中,我们在附近的Corona Australis区域观察到五个低质量物体,并在70μm处检测到至少三个。使用蒙特卡洛辐射转移码,我们基于详细的光谱能量分布(SED)模型研究了磁盘的质量和几何形状,并将这些新结果与早期较大的褐矮星样本的结果进行了比较。特别是,我们对这五个天体的SED分析再次表明,棕矮星或低质量恒星的盘几何形状通常与更高质量的类似物(例如T Tauri盘)相似,但盘质量范围扩大到远低于在T Tauri星。

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