Context. Neuhäuser et al. (2005, A&A, 435, L13) presented direct imaging evidence for a sub-stellar companion to the young T Tauri star GQ Lupi. Common proper motion was highly significant, but no orbital motion was detected. Faint luminosity, low gravity, and a late-M/early-L spectral type indicated that the companion is either a planet or a brown dwarf.
No takes yet. Share an insight, caveat, or question.
Neuhäuser et al. (2008) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: