NOAO >   Observing Info >   Approved Programs >   2017A-0178

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Program Information for 2017A-0178


PI: Christopher Britt, Michigan State U., britt@pa.msu.edu
Address: Department of Physics and Astronomy, East Lansing, MI, 48824-1116 USA

CoI: Thomas Maccarone, Texas Technical University

Title: Spectral 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 an outburst cycle has yet been undertaken with adequate sampling. The evolution of the profile of low excitation Balmer 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 2 (2017A):  GEM-SQ/GMOSS -- 11.2hrs band 3 (GS-2017A-Q-84)


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NOAO >   Observing Info >   Approved Programs >   2017A-0178

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