days between the Mount Stromlo and CTIO observations. Finally, we note that the 2MASS observations could not separate LW13 from its close companion.

Multiperiodicity is a well known phenomenon among red variables in the solar neighbourhood (e.g. Percy et al.[@percy03], Kiss et al.[@kiss99]). Long secondary periods are well known among long period variables, but a physical explanation for them has not yet been found (Wood, Olivier & Kawaler [@wok04]).

In Figure\[cmd\] we show the position of the variables in the colour-magnitude diagram using magnitudes from the CTIO images or, for a few stars, an alternative source given below. Only the giant branches and the horizontal branch are shown. Beside the variables listed in Table\[variables\], we also marked stars detected as variables but slightly below our amplitude cutoff criterion and stars with large irregularities in the light curve so that a period could not be determined. All $V$ and $V-I_{\rm
c}$ values of the variables are mean values derived from our light curves. For V5, V7, V11, V13 and V18 no CTIO data have been obtained. Instead, we give the values from Fox ([@fox82]). V3 was also not observed at CTIO, but $V$ and $I_K$ light curves were obtained by Eggen([@eggen75]) 