http://arxiv.org/abs/1806.09056
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.
C. Melis, B. Zuckerman, P. Dufour, et. al.
Tue, 26 Jun 18
58/71
Comments: 3 pages, 1 figure. Accepted for publication in RNAAS
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