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.
| |
|
 |
[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 |
Source LaTeX |
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