Table 2: Logarithm of the diffusion timescales (in years) for Ca, Mg, and Fe in hydrogen-rich white dwarfs as a function of effective temperature and surface gravity.
    $\log g$
$T\sb {\rm eff}$[K]   7.5 7.75 8.0 8.25 8.5 8.75 9.0
  Ca 6.1353 5.7436 5.3045 4.7835 4.1353 3.4683 2.5939
5000 Mg 6.1629 5.7188 5.2500 4.8033 4.2051 3.5215 2.6560
  Fe 6.1406 5.7159 5.2216 4.6712 3.9877 3.3064 2.4714
  Ca 5.1778 4.6687 4.2179 3.8380 3.4399 3.0440 2.5471
6000 Mg 5.2526 4.7300 4.2702 3.8767 3.4632 3.0424 2.5036
  Fe 5.1932 4.6841 4.2439 3.8780 3.4981 3.1134 2.5948
  Ca 4.6835 4.1794 3.6554 3.1968 2.7003 2.2280 1.7375
7000 Mg 4.7280 4.2117 3.6735 3.2086 2.6994 2.2151 1.7150
  Fe 4.6304 4.1124 3.5628 3.0924 2.5650 2.0642 1.5538
  Ca 4.2452 3.7668 3.2781 2.8298 2.3413 1.8960 1.3673
8000 Mg 4.2724 3.7838 3.2839 2.8307 2.3366 1.8874 1.3521
  Fe 4.1262 3.6333 3.1189 2.6570 2.1427 1.6812 1.1178
  Ca 3.6618 3.2656 2.8340 2.4193 1.9883 1.5547 1.0580
9000 Mg 3.6729 3.2722 2.8328 2.4146 1.9811 1.5451 1.0462
  Fe 3.4729 3.0716 2.6270 2.2022 1.7571 1.3075 0.7892
  Ca 2.1235 2.1596 2.1125 1.8695 1.5642 1.1934 0.7282
10 000 Mg 2.0589 2.1135 2.0940 1.8610 1.5580 1.1841 0.7134
  Fe 1.9373 1.9567 1.9125 1.6605 1.3344 0.9397 0.4499
  Ca 0.7272 1.0429 1.3574 1.3264 1.1629 0.9366 0.5481
10 500 Mg 0.7107 0.9840 1.2991 1.2851 1.1402 0.9232 0.5323
  Fe 0.6606 0.9191 1.1606 1.1139 0.9485 0.7065 0.2875
  Ca -0.6754 -0.2462 0.2184 0.4745 0.5944 0.5090 0.2723
11 000 Mg -0.4665 -0.1343 0.1712 0.4423 0.5441 0.4723 0.2487
  Fe -0.8266 -0.2525 0.1212 0.3335 0.3868 0.2845 0.0385
  Ca -1.0396 -1.2166 -1.0994 -0.5974 -0.2729 -0.1556 -0.1807
11 500 Mg -0.8548 -1.0199 -0.8862 -0.5751 -0.3171 -0.1855 -0.2240
  Fe -1.2632 -1.3974 -1.1010 -0.6656 -0.4005 -0.3263 -0.4012
  Ca -1.1486 -1.4876 -1.7497 -1.6973 -1.2673 -0.9217 -0.8417
12 000 Mg -0.9675 -1.3054 -1.5580 -1.4801 -1.1788 -0.9544 -0.8612
  Fe -1.3827 -1.7171 -1.9453 -1.7734 -1.3084 -1.0355 -0.9847
  Ca -1.1597 -1.5499 -1.9446 -2.2830 -2.5642 -2.8837 -2.7075
13 000 Mg -0.9673 -1.3627 -1.7644 -2.0971 -2.3796 -2.6888 -2.5069
  Fe -1.3675 -1.7691 -2.1787 -2.5123 -2.7764 -3.0656 -2.7119
  Ca -1.1156 -1.5065 -1.8966 -2.2858 -2.6730 -3.0616 -3.3721
14 000 Mg -0.9063 -1.3008 -1.6961 -2.0920 -2.4880 -2.8880 -3.1820
  Fe -1.2870 -1.6861 -2.0857 -2.4867 -2.8887 -3.2975 -3.5648
  Ca -1.0700 -1.4602 -1.8491 -2.2354 -2.6268 -3.0241 -3.4227
15 000 Mg -0.8583 -1.2519 -1.6451 -2.0368 -2.4286 -2.8253 -3.2286
  Fe -1.2172 -1.6147 -2.0126 -2.4102 -2.8097 -3.2097 -3.6109
  Ca -1.0351 -1.4223 -1.8116 -2.2034 -2.5981 -2.9955 -3.3929
16 000 Mg -0.8205 -1.2101 -1.6031 -1.9952 -2.3871 -2.7870 -3.1872
  Fe -1.1619 -1.5572 -1.9569 -2.3555 -2.7510 -3.1483 -3.5439
  Ca -1.0070 -1.3937 -1.7838 -2.1772 -2.5744 -2.9721 -3.3693
17 000 Mg -0.7924 -1.1822 -1.5741 -1.9612 -2.3587 -2.7580 -3.1572
  Fe -1.1056 -1.5030 -1.9037 -2.2994 -2.6988 -3.0968 -3.4931
  Ca -0.9846 -1.3722 -1.7646 -2.1596 -2.5554 -2.9530 -3.3503
18 000 Mg -0.7697 -1.1600 -1.5492 -1.9401 -2.3369 -2.7358 -3.1344
  Fe -1.0435 -1.4465 -1.8485 -2.2492 -2.6490 -3.0523 -3.4543
  Ca -0.9681 -1.3565 -1.7488 -2.1438 -2.5397 -2.9373 -3.3346
19 000 Mg -0.7512 -1.1406 -1.5288 -1.9234 -2.3199 -2.7184 -3.1167
  Fe -0.9809 -1.3866 -1.7916 -2.1955 -2.6010 -3.0076 -3.4125
  Ca -0.9545 -1.3433 -1.7352 -2.1304 -2.5263 -2.9239 -3.3213
20 000 Mg -0.7364 -1.1252 -1.5148 -1.9102 -2.3065 -2.7047 -3.1027
  Fe -0.9241 -1.3308 -1.7373 -2.1447 -2.5525 -2.9617 -3.3692
  Ca -0.8771 -1.2732 -1.6684 -2.0677 -2.4669 -2.8662 -3.2657
24 000 Mg -0.7030 -1.0903 -1.4830 -1.8772 -2.2719 -2.6675 -3.0640
  Fe -0.7958 -1.1973 -1.6004 -2.0050 -2.4111 -2.8187 -3.2277


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