We present resolved images of IRAS 23077+6707 (“Dracula’s Chivito”) in 1.3 mm/225 GHz thermal dust and CO gas emission with the Submillimeter Array (SMA) and optical (0.5–0.8 μm) scattered light with the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The Pan-STARRS data show a bipolar distribution of optically scattering dust that is characteristic for disks observed at high inclinations. Its scattered light emission spans ∼14″, with two highly asymmetric filaments extending along the upper bounds of each nebula by ∼9″. The SMA data measure 1.3 mm continuum dust as well as ¹²CO, ¹³CO, and C¹⁸O J = 2 − 1 line emission over 12″–14″ extents, with the gas presenting the typical morphology of a disk in Keplerian rotation, in both position–velocity space and in each CO line spectrum. IRAS 23077+6707 has no reported distance estimate, but if it is located in the Cepheus star-forming region (180–800 pc), it would have a radius spanning thousands of astronomical units. Taken together, we infer IRAS 23077+6707 to be a giant and gas-rich edge-on protoplanetary disk, which to our knowledge is the largest in extent so far discovered.

中文翻译：

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IRAS 23077+6707 的高分辨率 Pan-STARRS 和 SMA 观测：巨大的边缘原行星盘


我们展示了 IRAS 23077+6707（“Dracula's Chivito”）在 1.3 mm/225 GHz 热尘埃和 CO 气体排放中使用亚毫米阵列 (SMA) 和使用全景巡天望远镜的光学 (0.5–0.8 μm) 散射光的分辨率图像，以及快速响应系统（Pan-STARRS）。 Pan-STARRS 数据显示光学散射尘埃的双极分布，这是在高倾角下观察到的圆盘的特征。它的散射光发射跨度约 14 英寸，两条高度不对称的细丝沿着每个星云的上限延伸约 9 英寸。 SMA 数据测量 1.3 毫米连续粉尘以及 ¹² CO、 ¹³ CO 和 C ¹⁸ O J = 2 − 1 12”–14 范围内的线发射”范围内，气体在位置-速度空间和每个 CO 线谱中呈现出开普勒旋转中圆盘的典型形态。 IRAS 23077+6707 没有报告距离估计，但如果它位于仙王座恒星形成区域（180-800 pc），它的半径将跨越数千个天文单位。综上所述，我们推断 IRAS 23077+6707 是一个巨大且富含气体的边缘原行星盘，据我们所知，这是迄今为止发现的最大的。