3 papers
astro-ph.SR2026
Magnetically guided accretion and extremely slow rotation in a metal-enriched white dwarf
S. Bagnulo, M. A. Stroet, C. P. Folsom +3
White dwarfs that show atmospheric metal enrichment offer a direct window into the bulk composition of exoplanetary material and provide some of the most direct constraints on the…
astro-ph.SR2024
Metal accretion scars may be common on magnetic, polluted white dwarfs
S. Bagnulo, J. D. Landstreet, J. Farihi +3
More than 30% of white dwarfs exhibit atmospheric metals, which are understood to be from recent or ongoing accretion of circumstellar debris. In cool white dwarfs, surface motions…
astro-ph.SR2018
The magnetic propeller accretion regime of LkCa 15
J-F Donati, J Bouvier, SH Alencar +12
We present a spectropolarimetric study of the classical T Tauri star (cTTS) LkCa 15 investigating the large-scale magnetic topology of the central star and the way the field connec…