The Chemistry and Dynamics of Star-forming Regions Revealed with ALMA at Band 10: Water (HDO) Outflows and Complex Organic Line Forests with 300 au Resolution

We present the first results of a pilot program to conduct an Atacama Large Millimeter Array (ALMA) band 10 spectral line survey of the high-mass star-forming region NGC 6334I. The observations were taken in exceptional weather conditions (0.19 mm precipitable water), and reveal a bright, bipolar water outflow driven by the embedded massive protostar. We compare the morphology of the outflow to the locations of water masers observed with complementary VLA observations, showing maser flaring at the impact walls of the outflow with the surrounding gas. We also compare our new observations to those taken with the Herschel HIFI instrument in the same frequency range. More than an order of magnitude more lines are seen, a consequence of the substantial beam dilution suffered by Herschel in observations toward the hot core. We demonstrate the detection and characterization of glycolaldehyde across ALMA bands through to band 10.