NOAO >   Observing Info >   Approved Programs >   2016A-0060

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Program Information for 2016A-0060


PI: Mukremin Kilic, U. of Oklahoma, kilic@ou.edu
Address: 440 STREET, NORMAN, OK 73019 USA

CoI: Alejandro Corsico, U. Nacional de la Plata
CoI: J. J. Hermes, University of Warwick
CoI: Warren Brown, Harvard-Smithsonian Center for Astrophysics

Title: A Benchmark Pulsating White Dwarf Companion to PSR J1738+0333

Abstract: We used Gemini to discover the first millisecond pulsar with a pulsating white dwarf companion, PSR J1738+0333. Thanks to the accurate distance and radius estimates from radio timing measurements, PSR J1738+0333 becomes a benchmark for low-mass, pulsating white dwarfs. There are no other pulsating white dwarfs with 0.007 Msol precision in mass measurements. We propose here follow-up time-series photometry of this faint (V = 21.3 mag) system to map its full range of pulsation frequencies. These Gemini South observations offer an unprecedented opportunity to constrain the physical parameters (including the thickness of the surface hydrogen layer and therefore the cooling age) and interior structure of this white dwarf, and in turn, the mass and spin-down age of its pulsar companion.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016A):  GEM-SQ/GMOSS -- 9hrs band 1 (GS-2016A-Q-25)


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NOAO >   Observing Info >   Approved Programs >   2016A-0060

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