The accretion luminosity of an FU Ori disk is a fundamental system parameter, but a challenging one to estimate for all but the most well-studied systems. FU Ori objects are dynamically evolving accretion disks, especially close in time to the outburst epoch. They have a complex multitemperature disk structure that results in distinctly shaped, broad spectral energy distributions (SEDs). Detailed spectroscopic analysis is required for simultaneous constraint on relevant physical parameters such as the central stellar mass, inner disk radius, disk inclination, and disk accretion rate. However, outbursting systems that are deeply embedded and/or distant may be limited to only photometric measurement and over only a narrow range of wavelengths. The bolometric corrections necessary to estimate accretion luminosities are not straightforward and in particular cannot be adopted from existing literature on isotropically radiating stars. We present bolometric corrections specific to astrophysical accretion disks for a variety of filters in ongoing and upcoming all-sky surveys.

中文翻译：

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FU Ori 对象吸积盘光度的梯度校正


FU Ori 盘的吸积光度是一个基本的系统参数，但除了研究最充分的系统之外，所有系统都很难估计。FU Ori 天体是动态演变的吸积盘，尤其是在时间上接近爆发纪元。它们具有复杂的多温度圆盘结构，可产生形状鲜明、光谱宽广的能量分布 （SED）。需要对相关物理参数（如中心恒星质量、内盘半径、盘倾角和盘吸积率）进行同时约束，需要进行详细的光谱分析。然而，深埋和/或远距离的爆发系统可能仅限于光度测量，并且仅限于狭窄的波长范围。估计吸积光度所需的辐射热校正并不简单，特别是不能从现有关于各向同性辐射恒星的文献中采用。我们在正在进行的和即将到来的全天空巡天中为各种过滤器提供了特定于天体物理吸积盘的辐射热校正。