Recent observations have confirmed circumplanetary disks (CPDs) embedded in parental protoplanetary disks (PPDs). On the other hand, planetary-mass companions and planetary-mass objects (PMOs) are likely to harbor their own accretion disks. Unlike PPDs, CPDs and other disks around planet analogs are generally too compact to be spatially resolved by current instrumentation. In this study, we generate over 4000 spectral energy distributions of circum-PMO disks (CPMODs) with various host temperature and disk properties, which can be categorized into four prototypes, i.e., full, pretransitional, transitional, and evolved CPMODs. We propose a classification scheme based on their near-to-mid-infrared colors. Using those CPMOD models, we synthesize JWST (NIRCam and MIRI) photometry for F444W, F1000W, and F2550W wide filters. We show that F444W−F1000W and F444−F2550W colors can be applied to distinguish different types of CPMODs, especially for those around hot hosts. Our results indicate that the ongoing and future JWST observations are promising to unveil structures and properties of CPMODs.

中文翻译：

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詹姆斯·韦伯太空望远镜时代环行星质量物体盘的观测特征


最近的观测证实了母系原行星盘（PPD）中嵌入了环行星盘（CPD）。另一方面，行星质量伴星和行星质量天体（PMO）可能拥有自己的吸积盘。与 PPD 不同，CPD 和其他类似行星周围的圆盘通常过于紧凑，无法通过当前的仪器进行空间解析。在这项研究中，我们生成了超过 4000 个具有不同宿主温度和盘特性的环 PMO 盘 (CPMOD) 的光谱能量分布，这些分布可以分为四种原型，即完整、过渡前、过渡和演化 CPMOD。我们提出了一种基于近中红外颜色的分类方案。使用这些 CPMOD 模型，我们为 F444W、F1000W 和 F2550W 宽滤光片综合了 JWST（NIRCam 和 MIRI）光度测量。我们表明，F444W−F1000W 和 F444−F2550W 颜色可用于区分不同类型的 CPMOD，特别是对于热主机周围的 CPMOD。我们的结果表明，正在进行的和未来的 JWST 观测有望揭示 CPMOD 的结构和性质。