NOAO >   Observing Info >   Approved Programs >   2018A-0312

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Program Information for 2018A-0312


PI: Kenneth H Hinkle, NOAO, hinkle@noao.edu
Address: PO Box 26732, 950 NORTH CHERRY AVENUE, TUCSON, AZ 85726-6732 USA

CoI: Dick Joyce, NOAO
CoI: Thomas Lebzelter, Universitat Wien (University of Vienna)
CoI: Francis C Fekel, Tennessee State U.
CoI: Joanna Mikolajewska, Nicolaus Copernicus Astronomical Center
CoI: Cezary Galan, Nicolaus Copernicus Astronomical Center
CoI: Krystian Ilkiewicz, Nicolaus Copernicus Astronomical Center

Title: Exploring the violent history of SyXB systems

Abstract: There are currently eight confirmed neutron star - M giant binary systems. The existence of these systems would seem unlikely since neutron stars are typically seen as the result of massive core collapse SNe (CCS). A CCS would blow apart a binary system with a low mass companion. No doubt these binaries evolved along different routes, perhaps involving a common envelope phase. We will use high resolution near-IR spectroscopy to measure the velocities of seven of these systems, set limits on the orbital periods, and measure CNO, alpha, Fe peak, and s/r process elemental abundances. Using these parameters we will determine the initial conditions for the binaries and probe the evolutionary history.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  GEM-SQ/IGRINS -- 9.6hrs band 1 (GS-2018A-Q-122 )


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 >   2018A-0312

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