First Results of an ALMA Band 10 Spectral Line Survey of NGC 6334I:
  Detections of Glycolaldehyde (HC(O)CH$_2$OH) and a New Compact Bipolar
  Outflow in HDO and CS
  We present the first results of a pilot program to conduct an 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) with typical system temperatures $T_{\rm{sys}}$ $<$950 K at $\sim$890
GHz. A bright, bipolar north-south outflow is seen in HDO and CS emission,
driven by the embedded massive protostar MM1B. This has allowed, for the first
time, a direct comparison of the thermal water in this outflow to the location
of water maser emission from prior 22 GHz VLA observations. The maser locations
are shown to correspond to the sites along the outflow cavity walls where high
velocity gas impacts the surrounding material. We also compare our new
observations to prior Herschel HIFI spectral line survey data of this field,
detecting an order of magnitude more spectral lines (695 vs 65) in the ALMA
data. We focus on the strong detections of the complex organic molecule
glycolaldehyde (HC(O)CH$_2$OH) in the ALMA data that is not detected in the
heavily beam-diluted HIFI spectra. Finally, we stress the need for dedicated
THz laboratory spectroscopy to support and exploit future high-frequency
molecular line observations with ALMA.
