\journalname
Astronomy&AstrophysicsReview
The mass-luminosity diagram.
Fig. \ref{logLlogM} shows the mass-luminosity relation, i.e. the computed
\(\log L\) vs. the observed mass, for the stars in Table \ref{tableMR}. This
relation is popular in a number of modelling contexts and appears very
well-defined here at first sight. Note, however, that due to the high accuracy of the masses and large range in \(\log L\), the error bars are smaller than the plotted symbols. Thus, the scatter seen is of astrophysical, not observational origin, and is due to the varying effects of stellar evolution and chemical abundance from star to star. We elaborate further on these issues in the following section.