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Table 3
Volume emission measure distribution and coronal abundances of Tau Boo.
| RGS | |||
| Method 1 | Method 2 | EPIC | |
|
|
|||
| log T [K] | log EM [cm-3] | ||
|
|
|||
| 6.0 | 48.45 |
49.28 | ... |
| 6.1 | 48.70 |
49.38 | ... |
| 6.2 | 49.87 |
49.58 |
... |
| 6.3 | 50.56 |
49.88 |
50.94 |
| 6.4 | 50.75 |
50.08 |
... |
| 6.5 | 50.97 |
50.38 |
... |
| 6.6 | 51.13 |
51.23 |
51.70 |
| 6.7 | 50.84 |
51.43 |
... |
| 6.8 | 51.11 |
50.58 |
... |
| 6.9 | 49.84 |
49.78 |
50.93 |
| 7.0 | 49.03 |
49.58 |
... |
| 7.1 | 48.44 |
49.48 |
... |
| 7.2 | 47.87 |
49.28 |
... |
|
|
|||
| Elem. | Ac/A⊙a | Ac/A⊙a | |
|
|
|||
| C | 0.49 |
0.55 |
0.6 |
| N | 0.24 |
0.39 |
0.4 |
| O | 0.22 |
0.47 |
0.27 |
| Ne | 0.34 |
0.37 |
0.31 |
| Mg | 0.50 |
... | 0.53 |
| Si | ... | ... | 0.82 |
| S | ... | ... | = Fe |
| Ar | ... | ... | = Fe |
| Fe | 0.50 |
0.52 |
0.52 |
| Ni | 1.19 |
2.40 |
= Fe |
Notes.
(a)
All abundances are relative to the solar photospheric values by Anders & Grevesse (1989). Values with no error were fixed (see text).
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