The First Polluted White Dwarf from Gaia DR2: The Cool DAZ Gaia J1738-0826
Abstract
We present the first metal-polluted single white dwarf star identified through Gaia DR2. GaiaJ1738-0826, selected from color and absolute magnitude cuts in the Gaia DR2 data, was discovered to have strong Ca~II absorption in initial spectroscopic characterization at Lick Observatory. Notably, GaiaJ1738-0826 resembles in many ways the first confirmed metal-polluted hydrogen atmosphere white dwarf, the DAZ G74-7.
- Publication:
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Research Notes of the American Astronomical Society
- Pub Date:
- June 2018
- DOI:
- arXiv:
- arXiv:1806.09056
- Bibcode:
- 2018RNAAS...2...64M
- Keywords:
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- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 3 pages, 1 figure. Accepted for publication in RNAAS
