We report results from a search for galactic high-mass eclipsing binaries .
The photometric monitoring campaign was performed in Sloan r and i with the robotic twin refractor RoBoTT at the Universitätssternwarte Bochum in Chile and complemented by Johnson UBV data .
Comparison with the SIMBAD database reveals 260 variable high-mass stars .
Based on well-sampled light curves we discovered 35 new eclipsing high-mass systems and confirm the properties of six previously known systems .
For all objects , we provide the first light curves and determine orbital periods through the Lafler-Kinman algorithm .
Apart from GSC 08173-0018 and Pismis 24-13 ( P = 19.47 d and 20.14 d ) and the exceptional short-period system TYC 6561-1765-1 ( P = 0.71 d ) , all systems have orbital periods between 1 and 9 days .
We model the light curves of 26 systems within the framework of the Roche geometry and calculate fundamental parameters for each system component .
The Roche lobe analysis indicates that 14 systems have a detached geometry while 12 systems have a semi-detached geometry ; seven of them are near-contact systems .
The deduced mass ratios q = M _ { 2 } / M _ { 1 } reach from 0.4 to 1.0 with an average value of 0.8 .
The similarity of masses suggests that these high-mass binaries were created during the star formation process rather than by tidal capture .