TY CONF TI Stellar wind velocity of the massive component in the high mass X-ray binary OAO 1657$-$415 KW stars: pulsars: general KW winds KW outflows; X-rays: binaries; accretion; individual: OAO 1657–415 JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Ikhsanov, N.. AU Beskrovnaya, N.. AU Kim, V.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences