NOAO >   Observing Info >   Approved Programs >   2017A-0209

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Program Information for 2017A-0209


PI: Timothy Brandt, Institute for Advanced Study, tbrandt@ias.edu
Address: Princeton, NJ, 08540 USA

CoI: Laurent Pueyo, STScI
CoI: Erika Nesvold, Carnegie Institution of Washington

Title: Imaging the Only Known White Dwarf with a >8 Msun Progenitor

Abstract: We propose GPI imaging of a close binary B star known to host a white dwarf from extreme UV spectroscopy. The high mass (~5.5 Msun) and unevolved state of the primary B star imply a young system age (<45 Myr) and therefore an 8-9 Msun progenitor for the white dwarf. No other known white dwarf progenitor is likely to exceed ~6-7 Msun. Imaging the white dwarf would constrain its radius (and hence its mass) and orbital evolution, providing the strongest observational constraints to date on the fate of 8-10 Msun stars.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017A):  GEM-SQ/GPI -- 1.5hrs band 2 (GS-2017A-Q-55)


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NOAO >   Observing Info >   Approved Programs >   2017A-0209

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