2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/9283We present a comparison of our VLT/NACO K-band spectrum of the GQ Lupi companion with the new GAIA-dusty model atmosphere grid for T=2000 and 2900 K and log g from 0 to 4. Then, we discuss the mass estimate for GQ Lup companion.Proceedings ESO Workshop on The power of optical/IR interferometryAstrophysicstext