2055 20160701171658.0 10.1051/0004-6361:20052804 DOI ASTROimport-212 Pavlovski, K. 2005 Abundances from disentangled component spectra: theeclipsing binary V578 Mon Chemical abundances of the early B type components of the binary V578 Mon are derived from disentangled component spectra. This is a pilot study showing that, even with moderately high line-broadening, metal abundances can be derived from disentangled spectra with a precision of 0.1 dex, differential to sharp-lined single stars of the same spectral type. This binary is well-suited to such an assessment because of its youth as a member of the Rosette Nebula cluster NGC 2244, strengthening the expectation of an unevolved ZAMS chemical composition. The method is useful for studying rotationally driven mixing in main-sequence stars, since fundamental stellar parameters are known with higher accuracy in (eclipsing) binaries. This paper also evaluates of the bias that might be present in disentangled spectra. Hensberge, H. Astronomy and Astrophysics 439 1 2005 309-315 http://esoads.eso.org/abs/2005A%26A...439..309P published in REFERD