NOAO >   Observing Info >   Approved Programs >   2018A-0306

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Program Information for 2018A-0306


PI: Megan Reiter, U. of Michigan, mreiter@umich.edu
Address: Department of Astronomy, 311 West Hall, 1085 S. University Ave, Ann Arbor, MI, 48109-1107 USA

CoI: Nathan Smith, U. of Arizona

Title: Connecting refractory grains in jets with their dusty source

Abstract: HH 1019 in the Carina Nebula is the first protostellar jet seen in silhouette against the bright background of an HII region. This provides strong, direct evidence for dust in a protostellar jet. The existence of dust in jets has been argued from the depletion of refractory elements from the gas phase, but only a very few sources provide direct evidence for dust. HH 1019 is one. We therefore request AO-assisted narrowband imaging with GSAOI on Gemini South to look for (1) H2 molecules that accompany the dust, (2) continuum emission from the hot dust in the jet, and (3) near-IR [Fe II] emission tracing the refractory elements expected to be liberated from grains in jet shocks. This will be the first study to connect refractory elements in jets to the dust grains that carry them into the jet and an important testbed for the efficiency of dust destruction in shocks.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  GEM-SQ/GSAOI -- 25.5hrs band 2 (GS-2018A-Q-210 )


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NOAO >   Observing Info >   Approved Programs >   2018A-0306

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