We are conducting a multi-wavelength analysis of high-resolution molecular spectra that probe the evolution of gas in the inner 10au in protoplanetary disks. A sample of 15 disks has been combined to probe a range of inner disk structures including small and large dust cavities. Half of the sample has been observed in far-ultraviolet H₂ emission with a new HST-COS program (GO-14703), that we have combined to near-infrared spectra of CO emission as observed with VLT-CRIRES and IRTF-iSHELL. This synergic dataset traces the evolution and depletion of CO and H₂ in inner disk cavities and shows an evolving radial stratification of the molecular gas, where CO lines are narrower than H₂ lines in disks with cavities. CO rotation diagrams also show significant evolution, suggesting a change in gas excitation as CO emission recedes to larger disk radii.

我们正在对高分辨率分子光谱进行多波长分析，以探测原行星盘内部 10au 中气体的演化。已将 15 个磁盘的样本组合起来，以探测一系列内部磁盘结构，包括小型和大型尘埃腔。_{使用新的 HST-COS 程序 (GO-14703) 已在远紫外 H 2}发射中观察到一半样品，我们已将其与使用 VLT-CRIRES 和 IRTF-iSHELL 观察到的 CO 发射的近红外光谱相结合。_{这个协同数据集追踪了内盘腔中 CO 和 H 2}的演变和消耗，并显示了分子气体不断演变的径向分层，其中 CO 线比 H _2窄带空腔的磁盘中的线。CO 旋转图也显示出显着的演变，表明随着 CO 排放减少到更大的圆盘半径，气体激发发生了变化。