Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions

Key Points

• The aim is to characterize the white dwarf WD 0008-350A and its two comoving low-mass companions using spectroscopic data.
• Obtained spectroscopic data for WD 0008-350A and its companions.
• Analyzed the spectral type of the companions using near-infrared spectra.
• Confirmed the white dwarf's classification as a hydrogen-rich DA.
• WD 0008-350A is confirmed as a hydrogen-rich DA white dwarf with an effective temperature of 6200 K.
• The inner companion is identified as an M8 dwarf.
• The outer companion appears to be a binary with spectral types M6 + M9.
• Evidence suggests the system may be a quadruple star system.

Abstract