We are conducting a survey of high-resolution near-infrared CO rovibrational spectra in protoplanetary disks around young intermediate-mass stars. We use IRTF-iSHELL with the 0.″375 and 0.″75 slits, providing 4 km s⁻¹ and 6km s⁻¹ resolution and covering 4.52–5.25μm in one single exposure. This includes part of the rovibrational R branch and most of the P branch of the CO fundamental band (Δv=1), one of the best tracers of warm/hot gas in disks. The high quality of the spectra and the large sample covered in this survey will support multiple investigations to study the structure, kinematics, composition, and evolution of the inner 10au in disks for years to come. The survey currently includes ∼30 stars mostly within 200pc, complementing extensive imaging campaigns that are observing their disks at optical, infrared, and millimeter wavelengths and revealing structures and planets.

我们正在对年轻的中等质量恒星周围的原行星盘中的高分辨率近红外 CO 振动光谱进行调查。我们使用具有 0.”375 和 0.”75 狭缝的 IRTF-iSHELL，提供 4 km s ^-1和 6km s ^-1的分辨率，一次曝光覆盖 4.52-5.25 μ m。这包括部分旋转振动 R 分支和 CO 基带的大部分 P 分支（Δv=1)，盘中温/热气体的最佳示踪剂之一。本次调查涵盖的高质量光谱和大样本将支持多项调查，以研究未来几年磁盘中内部 10au 的结构、运动学、组成和演化。该调查目前包括约 30 颗恒星，大部分在 200% 以内，以补充广泛的成像活动，这些活动正在光学、红外和毫米波长观察它们的圆盘，并揭示结构和行星。