2600 20160701171707.0 ASTROimport-757 Lampens, P. 2007 Spectral disentangling and combined orbital solution for the Hyades binary Theta~2~Tau Theta~2~Tau is a detached, "single-lined" binary and the most massive resolved spectroscopic binary of the Hyades cluster. It also shows a complex pattern of pulsations of type Delta Scuti. Its eccentric orbit (e=0.7) has a periodicity of 140.7 days. Component~B is very difficult to detect spectroscopically. For this reason, the few radial velocities published in the literature are inaccurate. From recent high-resolution spectroscopic data obtained with the ELODIE spectrograph at the OHP (France), we derived accurate radial velocities for *both* components applying a spectral disentangling algorithm (by P. Hadrava, 1999). We then combined these measurements with available very-large baseline interferometric data in order to improve the knowledge of the orbital parameters and derived fundamental properties in a self-consistent way. Such determination is also very pertinent to revisit the evolutionary status of both components. Frémat, Y. De Cat, P. Hensberge, H. Binary Stars as Critical Tools Tests in Contemporary Astrophysics 240 2007 213 http://esoads.eso.org/abs/2007IAUS..240..213L published in NONREF