NOAO >   Observing Info >   Approved Programs >   2016A-0250

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Program Information for 2016A-0250


PI: Christopher Britt, Texas Technical University, christopher.britt@ttu.edu
Address: Box 41051, Lubbock, TX, 79409 USA

CoI: Thomas Maccarone, Texas Technical University

Title: Spectroscopic evolution of a Black Hole X-ray Transient

Abstract: We propose optical spectroscopic monitoring, for the first time, of a Black Hole X-ray Transient (BH XRT) through an entire outburst cycle from outburst to low Eddington fractions. While spectroscopic observations at various X-ray states have been made for a number of different systems at different orbital periods and inclinations, no study of the same system throughout a single outburst cycle has yet been undertaken with adequate sampling. The evolution of the profile of low excitation Balmer lines compared to higher excitation He II lines as the outburst progresses should reveal the relationship between the wind and disk state as the Eddington fraction drops.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016A):  GEM-SQ/GMOSS -- 41hrs band 3 (GS-2016A-Q-87)


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 >   2016A-0250

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