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Published online by Cambridge University Press: 14 August 2015
A method of distinguishing between T Tauri-like stars and reddened early type field stars by the application of UBVRI photometry is described, and the results for T Tauri-like variables in NGC 2264 are presented. The plates have been measured using the new measuring machine GALAXY. (V–R) colours, which are less affected by spectral peculiarities, are used to determine infrared and ultraviolet excesses. The range of variability in UBVRI colours of these varables has also been studied.