Table 1.
Sample of sources selected for this study with their respective distance, Galactic absorption (Kalberla et al. 2005; HI4PI Collaboration 2016), and log of observations considered.
| Epoch | Telescope | Instrument | Date | Obs. ID | Good Exp |
|---|---|---|---|---|---|
| (ks) | |||||
| Holmberg II X−1 (D = 3.27 Mpc (a), nH = 3.7 × 1020 cm−2) | |||||
| 1X | XMM-Newton | pn/MOS1/MOS2 | 2002-04-10 | 0112520601 | 4.6/9.5/9.6 |
| 2X | XMM-Newton | pn/MOS1/MOS2 | 2002-04-16 | 0112520701 | 3.7/5.1/5.7 |
| 3X | XMM-Newton | pn/MOS1/MOS2 | 2002-09-18 | 0112520901 | 3.8/5.8/6.5 |
| 4X | XMM-Newton | pn/MOS1/MOS2 | 2004-04-15 | 0200470101 | 35.0/49.6/51.1 |
| 5X | XMM-Newton | pn/MOS1/MOS2 | 2010-03-26 | 0561580401 | 21.7/39.6/40.7 |
| 6XNN | XMM-Newton | pn/MOS1/MOS2 | 2013-09-09 | 0724810101 | 4.6/6.6/6.6 |
Notes. For each particular epoch, the number of Xs, Ns, or Cs indicates the number of XMM-Newton, NuSTAR, and Chandra observations, respectively, that have been fitted together. The full table is available at the CDS.
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