PI: John Lacy, University of Texas, firstname.lastname@example.org
Address: Department of Astronomy, 2515 Speedway, C1400, Austin, TX, 78712, USA
CoI: Tie Liu, Peking University
CoI: Matthew Richter, UC Davis
CoI: Daniel Jaffe, University of Texas
Title: A Study of the NGC 7538 IRS 1 high-mass star formation region
Abstract: The pre-main-sequence evolution of forming OB stars, and how they interact with their environments, is poorly understood. We propose to study one of the prototypical high-mass star formation regions, NGC 7538 IRS 1, in mid-infrared ionic and molecular lines. We will study a source within IRS 1 that shows very broad ionic lines to test a disk-wind explanation for the lines. We will observe a He recombination line to measure the spectral type of the source to determine if the star lies to the right of the main sequence, as would be expected if it is still accreting mass. We will search for additional luminosity sources in IRS 1 to see if the stars are forming in a cluster. And we will study molecular absorption that likely forms in a larger ring or disk around IRS 1.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360