Program: GN-2017B-DD-11

Title:IR Imaging of NGC 2071 IRS1 and its environment
PI:Thomas R. Geballe
Co-I(s): Dolores Coulson

Abstract

We request a small amount of Director's Time to obtain new J-K, H2, and Br gamma images of the intermediate mass young stellar object (YSO) NGC2071 IRS1. These images, which will be 3 or more times higher resolution than any previously obtained, will complement our existing Gemini high-resolution spectroscopic study of CO and H2 in IRS1, and will allow us to better understand the complex structure, excitation, and kinematics of the gas close to the protostar. IRS1 produces a collimated and highly extended (arc-minute size) outflow, which has been well studied in lines of shocked H2 and in mm CO lines far from the YSO. Infrared fundamental band CO emission at 4.7um, presumably from a dense and warm circumstellar disk, and line emission from H2 were detected by us in 2016B, in close proximity to the YSO, but have diffferent spatial distributions, and thus arise in different physical environments. Ionized gas, observed via the H I Br gamma line, also has been detected at the position of the young star and must be located in a third region close to the star, distinct from those emitting the CO and H2 lines.

Publications using this program's data