GNIRS HR-IFU stacked images of the protoplanetary disk AB Aurigae (AB Aur)

Emission map of the CO fundamental ro-vibrational P22 transition at 4.8760 μm; P25 at 4.909 μm, and P26 at 4.920 μm. Each emission line map is generated by integrating over seven spectral channels centered on the line wavelength and subtracting the continuum emission. The ability of the GNIRS HR-IFU to disentangle faint, narrow line emission in the M band will enable detailed characterization of gas in these planet forming disks.