Table 3
Absorption and emission lines detected in the RGS stacked spectra of ARK 564.
| Erest/eV | σ/eV | FWHM/km s-1 | EW/eV | Δχ2 | ID | Eth/eV |
|
|
||||||
|
|
|
|
30.6 | N VI | 430 (r), 426 (i), 420 (f) |
|
< 0.2 | < 330 |
|
83.3 | N VI 1s − 2p | 431 |
|
< 0.5 | < 810 |
|
41.4 | C VI 1s − 3p | 436 |
|
< 1.2 | < 1690 |
|
25.5 | N VII 1s − 2p | 500 |
|
< 0.6 | < 780 |
|
104.2 | O IV 1s − 2p | 545 |
|
|
|
|
47.3 | ? | ? |
|
< 0.4 | < 510 |
|
45.8 | O V 1s − 2p | 555 |
|
< 0.5 | < 630 |
|
55.1 | O VII | 574 (r), 569 (i), 561 (f) |
|
< 0.5 | < 630 |
|
18.5 | O VI 1s − 2p | 564 |
|
< 1.0 | < 1230 |
|
32.1 | O VII 1s − 2p(r) | 574 |
|
|
|
|
17.8 | ? | ? |
|
< 0.5 | < 530 |
|
31.1 | O VIII 1s − 2p | 653 |
|
< 0.5 | < 530 |
|
70.6 | O VII 1s − 3p | 666 |
|
|
|
|
170.5 | Fe M UTA | 700−800 |
|
|
|
|
20.2 | Fe M UTA | 700−800 |
|
< 2.2 | < 1910 |
|
17.4 | Fe XVII 2p − 3d | 812 |
|
|
|
|
75.8 | Fe XVIII 2p − 3d | 873 |
|
|
|
|
53.8 | Ne IX 1s − 2p | 922 |
|
< 4.4 | < 3050 |
|
20.1 | Ne X 1s − 2p | 1022 |
Notes. Column (1): rest frame line centroid energy; Col. (2): observed frame line width; Col. (3): observed frame line width; Col. (4): observed frame line equivalent width; Col. (5): statistical improvement after adding the line, for three free parameters; Col. (6): line ID; Col. (7): theoretical line transition energy. All the errors are at the 90% confidence level.
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