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arXiv 2103.00004astro-ph.GAastro-ph.IMastro-ph.SR
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从射电连续谱能量分布模型确定行星状星云的角直径

Determination of Planetary Nebulae angular diameters from radio continuum Spectral Energy Distribution modeling

I. S. Bojicic, M. D. Filipovic, D. Urosevic, Q. A. Parker, T. Galvin

摘要:

新的高分辨率、高灵敏度、多频率、宽场无线电测量正在出现,如澳大利亚平方公里阵列探路者(ASKAP)宇宙演化图(EMU)。它们将提供新的机会,对各种扩展的天体物理现象的有用参数进行新的确定。在这里,我们认为具体的应用程序的行星状星云(PNe)的角尺寸测定通过一个新的无线电连续谱能量分布(SED)拟合技术。我们表明,可以获得强大的角大小的测定,最好的光学和无线电观测,但在整个人口的一致应用的潜力。这包括在光学中极其微弱或甚至不可检测的未分辨和/或严重模糊的PNe。

英文摘要:

Powerful new, high resolution, high sensitivity, multi-frequency, wide-field radio surveys such as the Australian Square Kilometre Array Pathfinder (ASKAP) Evolutionary Map of the Universe (EMU) are emerging. They will offer fresh opportunities to undertake new determinations of useful parameters for various kinds of extended astrophysical phenomena. Here, we consider specific application to angular size determinations of Planetary Nebulae (PNe) via a new radio continuum Spectral Energy Distribution (SED) fitting technique. We show that robust determinations of angular size can be obtained, comparable to the best optical and radio observations but with the potential for consistent application across the population. This includes unresolved and/or heavily obscured PNe that are extremely faint or even non-detectable in the optical.

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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