NOAO >   Observing Info >   Approved Programs >   2017A-0248

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Program Information for 2017A-0248


PI: Christopher M. Johns-Krull, Rice U., cmj@rice.edu
Address: Department of Physics and Astronomy, MS 108, 6100 South Main, Houston, TX, 77005-1892 USA

Title: Magnetic Field Evolution During the Pre-Main Sequence

Abstract: We will begin to map out the potential transition from primordial magnetic fields to fields generated by an internal dynamo during the evolution of a young star by measuring the magnetic field properties of stars in the age range of 10-100 Myr by observing several stars in nearby young (8-50 Myr) moving groups. The K band contain numerous highly magnetically sensitive atomic lines, notably several Ti I lines, which are strong in late type stars. We will use these along with simultaneously observed magnetically insensitive lines to measure the strength and filling factor of the fields on our targets stars. Due to its good sensitivity and broad wavelength grasp, Phoenix on Gemini South is uniquely situated to perform this research.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017A):  GEM-S-SVC/PHNX -- 19.6hrs band 1 (GS-2017A-Q-17)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017A-0248

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