Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions
Abstract We present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with T eff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M ⊙ , close to that of the average white dwarf. Near-infrared spectra of the two stellar companions to WD 0008-350A reveal that the inner companion is an M dwarf, exhibiting a spectral type of M8. Furthermore, the outer companion is identified as a possible M6 + M9 binary. This paper examines the evidence which suggests the system may be quadruple.
Authors
- Adam C. Schneider (ORCID: https://orcid.org/0000-0002-6294-5937)
- A. Bravo (ORCID: https://orcid.org/0009-0002-3936-8059)
- Peter A. Jałowiczor (ORCID: https://orcid.org/0000-0002-4175-295X)
- A. Rebassa–Mansergas (ORCID: https://orcid.org/0000-0002-6153-7173)
- Austin Rothermich (ORCID: https://orcid.org/0000-0003-4083-9962)
- Raquel Murillo-Ojeda (ORCID: https://orcid.org/0009-0002-8578-0765)
- Jonathan Gagné
- Alex J. Brown
- Sarah L. Casewell
- Thomas P. Bickle
- Michiharu Hyogo
- Adam J. Burgasser
- Marc J. Kuchner
- Mark Popinchalk
- Aaron M. Meisner
- Jacqueline K. Faherty
- J. Davy Kirkpatrick
- Nicola Gentile Fusillo
Publication Details
- Journal
- The Astronomical Journal
- Published
- 2026-02-18
- DOI
- https://doi.org/10.3847/1538-3881/ae38d3
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00