Towards Understanding the Nature of Young Detached Binary System HD 350731

摘要: The young binary system HD 350731 is a noteworthy laboratory for studying early-type binaries with similar components. We present here the analysis of differential multi-color photometric and spectroscopic observations double-lined detached system. Accurate absolute parameters were determined from simultaneous solution light radial velocity curves first time. consists two B8V-type components having masses radii respectively $M_{1}=2.91\pm0.13$ M$_{\odot}$, $M_{2}=2.80\pm0.14$ $R_{1}= 2.11 \pm0.05$ R$_{\odot}$ $R_{2}=2.07\pm0.05$ R$_{\odot}$. effective temperatures based on disentangled spectra derived to be $12000\pm250$ K $11830\pm300$ primary secondary components, respectively. measured projected rotational velocities, 69.2$\pm$1.5 km s$^{-1}$ 70.1$\pm$1.7 secondary, found closer pseudo-synchronous velocities Comparison evolutionary models suggests an age 120$\pm$35 Myr. Kinematic unevolved revealed that it belongs thin-disc population Galaxy.