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Table 1

Maximum distances, d, at which unreddened WDs will be observed by Gaia for pure-H (Tremblay et al. 2011) and pure-He (Bergeron et al. 2011, which only covers Teff > 3500 K) models.

log g = 7.0 log g = 8.0 log g = 9.0
T eff M G d (pc) dAV (pc) M G d (pc) dAV (pc) M G d (pc) dAV (pc)
Pure-H (Lyman-α)
2000 17.28 35 34 18.22 23 22 19.77 11 11
3000 15.80 69 67 16.76 45 44 18.38 21 21
4000 14.86 107 102 15.84 68 66 17.44 33 32
5000 13.72 180 167 14.86 107 102 16.55 49 48
10 000 10.74 711 552 12.18 366 317 13.96 161 151
20 000 9.23 1425 929 10.81 689 538 12.59 303 268
Pure-He
4000 15.16 93 89 16.09 61 59 17.77 28 27
5000 13.76 177 164 14.86 107 102 16.58 48 47
10 000 10.92 655 516 12.28 350 304 14.02 157 147
20 000 9.17 1465 947 10.68 731 564 12.44 325 285

Notes. dAV is the limiting distance when an average reddening corresponding to an observation in the disc direction has been applied (assuming an extinction of 1 mag kpc-1). The ages of all these WDs can be consulted in the CDS online tables (Tables 3–5). MG is the absolute magnitude at G passband.

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