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JWST Reveals White Dwarf's Planetary Remnants and Accretion

10/25/2025

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Summary

Story summary

LSPM J0207+3331, a white dwarf 145 light-years away, is accreting material from its planetary system, and James Webb Space Telescope (JWST) observations may help.
Spectroscopic observations reveal thirteen elements in the star's atmosphere, indicating accretion from a rocky body about 120 miles wide.
Lead author Érika Le Bourdais notes that white dwarfs may retain planetary remnants after a star dies, with ESA's Gaia mission observations potentially revealing system's dynamics.

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Story summary

LSPM J0207+3331, a white dwarf 145 light-years away, is accreting material from its planetary system, and James Webb Space Telescope (JWST) observations may help.
Spectroscopic observations reveal thirteen elements in the star's atmosphere, indicating accretion from a rocky body about 120 miles wide.
Lead author Érika Le Bourdais notes that white dwarfs may retain planetary remnants after a star dies, with ESA's Gaia mission observations potentially revealing system's dynamics.