Table 3: Main characteristics of computed models representative of RV Ari. Labels ranging from 0 to 4 indicate the location of the models in the HR diagram displayed in Fig. 1. From left to right, M represents the stellar mass in solar masses  ${{M}_{\odot }}$; $T_{{\rm eff}}$ the effective temperature in K (on a logarithmic scale); g the surface gravity in cgs (on a logarithmic scale); $X_{{\rm c}}$ the central hydrogen mass fraction; the age in Myr; $\alpha $ the mixing-length parameter; $\nu _{{\rm min}}$ - $\nu _{{\rm max}}$ represents the frequency range ( $\mu {\rm Hz}$) of predicted unstable modes; $\Delta z/H_p$ the size of the external convective zone normalised by the local pressure scaleheight measured at the bottom of the convection zone; $\Delta z/R_*$ the fraction of stellar radius occupied by the external convective zone; $\nu _{{\rm f}}$ the fundamental radial mode (in  $\mu {\rm Hz}$); and finally, $\bar \rho$ represents the stellar mean density (in cgs).

ID (ij)		 M $T_{{\rm eff}}$ g $X_{{\rm c}}$ Age $\alpha $ $\nu _{{\rm min}}$ $\nu _{{\rm max}}$ $\Delta z/H_p$ $\Delta z/R_*$ $\nu _{{\rm f}}$ $\bar \rho$

00		 1.75 3.859 3.94 0.302 1186 2.0 78 380 1.16 0.33 130.98 0.192
01 1.75 3.859 3.94 0.302 1186 1.5 79 336 0.82 0.18 131.03 0.192
02 1.75 3.859 3.94 0.303 1186 1.0 95 355 0.71 0.14 131.10 0.192
03 1.75 3.859 3.94 0.303 1186 0.5 98 361 0.66 0.13 131.13 0.192
10 2.10 3.867 3.70 0.132 860 2.0 71 242 0.81 0.20 81.82 0.076
11 2.10 3.868 3.70 0.132 860 1.5 77 250 0.75 0.18 81.82 0.076
12 2.10 3.868 3.70 0.132 860 1.0 78 255 0.74 0.17 81.82 0.076
13 2.10 3.868 3.70 0.132 860 0.5 78 267 0.71 0.16 81.83 0.076
20 2.01 3.850 3.69 0.121 985 2.0 63 218 1.03 0.33 81.32 0.075
21 2.01 3.850 3.69 0.120 985 1.5 66 216 0.70 0.18 81.32 0.075
22 2.01 3.850 3.69 0.120 985 1.0 66 225 0.70 0.18 81.32 0.075
23 2.01 3.850 3.69 0.120 985 0.5 67 224 0.63 0.15 81.32 0.075
30 1.57 3.868 4.19 0.538 850 2.0 117 780 1.95 0.80 208.59 0.483
31 1.57 3.868 4.19 0.538 850 1.5 124 491 0.87 0.16 208.50 0.483
32 1.57 3.867 4.19 0.538 850 1.0 127 525 0.74 0.12 208.59 0.483
33 1.57 3.867 4.19 0.538 850 0.5 127 551 0.69 0.11 208.49 0.483
40 1.49 3.850 4.19 0.521 1080 2.0 111 770 2.58 2.71 205.05 0.485
41 1.49 3.850 4.19 0.540 985 1.5 119 785 1.83 0.77 211.31 0.494
42 1.49 3.849 4.19 0.542 980 1.0 125 383 0.80 0.15 211.61 0.494
43 1.49 3.850 4.19 0.543 975 0.5 125 406 0.67 0.12 212.00 0.494

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