Close this Window Pezzuto, S., Grillo, F., Benedettini, M., Caux, E., Di Giorgio, A. M., Giannini, T., Leeks, S. J., Lorenzetti, D., Nisini, B., Saraceno, P., Spinoglio, L. & Tommasi, E. /ISO/-LWS two-colour diagram of young stellar objects. /Monthly Notices of the Royal Astronomical Society/ *330* (4), 1034-1040. doi: 10.1046/j.1365-8711.2002.05146.x ------------------------------------------------------------------------ Figure 2 The median colours for each class (filled symbols) with their root-mean-square errors (dashed lines). From top to bottom: Class 0, Class I, Class II and Bright Class I. Solid line: colours of a single blackbody as in Fig. 1 ; dotted line: colours of a blackbody modified with an emissivity law / lamba / ^ -1 at /T/: 25, 30, 40, 50 K; dashed line: as before but with the emissivity / lamba / ^ -2 and /T/: 25, 30 K. Dotted-dashed line: colours of two blackbodies at 25 and 90 K and different radii; the cross marks the colours corresponding to the case when the radius of the colder source is 10 times larger than the radius of the warmer source. ------------------------------------------------------------------------ up Back to top <#>