White dwarf WD J000801.25-350450 and its companions form a possible quadruple system

WD J000801.25-350450 is a white dwarf star with two widely separated, co-moving companions. New spectroscopic observations confirm that the white dwarf is hydrogen-rich, with a temperature of about 6200 Kelvin and a mass similar to the average white dwarf. The inner companion is an M8-type red dwarf, while the outer companion appears to be a binary system made up of M6 and M9-type stars.

This configuration suggests that the system may actually be a quadruple, with the white dwarf and three low-mass stars bound together. Studying such systems helps astronomers understand how stars evolve and interact, especially after one star becomes a white dwarf. The findings also provide insight into the formation and stability of multiple-star systems.

Key findings
- WD J000801.25-350450 is a hydrogen-rich white dwarf
- The system includes an M8 red dwarf and a possible M6+M9 binary
- The system may be a quadruple star system
- Spectroscopic data confirm the properties of all components
- Results help understand the evolution of multiple-star systems

Scientific study

Spectroscopic Characterization of WD J000801.25-350450 and its Two Co-Moving Companions (external link)