Program: GN-2019B-FT-212

Title:Toward Solving the Mysteries of NGC2071-IR
PI:Thomas R. Geballe
Co-I(s): Dolores Coulson

Abstract

We request time to obtain GNIRS "survey" K-band spectra of the five remaining best candidate active protostars in the nearby intermedate mass star-forming region NGC2071-IR. The region has been observed intensely for the last four decades, but a detailed understanding of it has remained elusive, in large part due to the complexity of the molecular outflows and shocked molecular gas that some its protostars have generated. Our recently published high-resolution image of the H2 2.12um S(1) line suggests that the region contains at least three outflows and quite possibly more. The K-band contains several key signatures of protostellar activity: H2 lines, the H I Br gamma line, and CO overtone bands. Recent K-band spectra of two target protostars in NGC2071-IR by us have demonstrated that both are active and are outflow sources. Spectra of the remaining five best candidates will reveal which ones are accreting and/or ejecting material, should allow us to assign outflows to individual protostars, and in any event will result in a paper clarifying which of them are likely outflow sources, and indicating if and how they should be studied in more detail.