The first polluted white dwarf from Gaia DR2: the cool DAZ GaiaJ1738-0826

Carl Melis; B. Zuckerman; P. Dufour; I. Song; B. Klein

The first polluted white dwarf from Gaia DR2: the cool DAZ GaiaJ1738-0826

Solar and Stellar Astrophysics 2018-06-26 v1

Authors: Carl Melis , B. Zuckerman , P. Dufour , I. Song , B. Klein

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.

Keywords

white dwarf metal-polluted gaia dr2 da z ca ii absorption spectroscopy

Cite

@article{arxiv.1806.09056,
  title  = {The first polluted white dwarf from Gaia DR2: the cool DAZ GaiaJ1738-0826},
  author = {Carl Melis and B. Zuckerman and P. Dufour and I. Song and B. Klein},
  journal= {arXiv preprint arXiv:1806.09056},
  year   = {2018}
}

Comments

3 pages, 1 figure. Accepted for publication in RNAAS

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