Free Access
Table 2
Catalogue description.
| Column | Description |
|
|
|
| 1 | Source number |
| 2−3 | X-ray coordinates, right ascension and declination (epoch 2000.0) |
| 4 | Uncertainty of X-ray position [′′]. For XMM-Newton positions taken from Sturm et al. (2013c) the 1σ error includes a systematic uncertainty of 0.5′′. |
| 5 | Origin of the X-ray coordinate (A: ASCA, C: Chandra, E: Einstein, I: Integral, N: XMM-Newton, R: ROSAT, S: Swift, X: RXTE). When no reliable position could be determined from the non-imaging RXTE collimator-instruments, a radius of 30′ for the position error indicates the size of the field of view. |
| 6 | Reference for source discovery. |
| 7 | Identification of optical counterpart with emission-line star from Meyssonnier & Azzopardi (1993). The negative number indicates a star found in the catalogue of Murphy & Bessell (2000). |
| 8−15 | Flags indicating different source properties. For their description see Table 3. |
| 16 | Confidence class (values 1−6, see Table 4). |
| 17−18 | Optical coordinates, right ascension and declination (epoch 2000.0) for the identified counterpart from Zaritsky et al. (2002), or – when not available there – from Massey (2002). |
| 19−26 | The Magellanic Clouds Photometric Survey (MCPS): U, error(U), B, error(B), V, error(V), I, error(I) [mag] from Zaritsky et al. (2002). |
| 27−32 | Colour indices U−B, error(U−B), B−V, error(B−V), V−I, error(V−I) [mag] derived from MCPS photometry. |
| 33−34 | Reddening-free Q-value (Q = U−B−0.72 × (B−V)) and error(Q) [mag]. |
| 35 | Near-IR counterpart to the optical star from the Two Micron All Sky Survey (2MASS, Skrutskie et al. 2006). |
| 36−41 | Near-IR magnitudes with corresponding errors: J, error(J), H, error(H), K, error(K) [mag]. |
| 42−45 | Near-IR colour indices, J−H, error(J−H), H−K, error(H−K) [mag]. |
| 46−53 | Spitzer IRAC fluxes at 3.6, 4.5, 5.8 and 8.0 μm [mag] with respective errors (from the SAGE project, for a description see Meixner et al. 2006). |
| 54 | Angular distance between X-ray and optical position [′′]. |
| 55 | Angular distance between optical and near-IR position [′′]. |
| 56 | Neutron star spin period [s] inferred from X-rays. |
| 57 | Orbital period [days] (see flags for origin). |
| 58−59 | Maximum and minimum X-ray flux [erg cm-2 s-1] when available in the 0.2−10 keV band. Fluxes in the SMC XMM-Newton catalogue of Sturm et al. (2013c) are given for the 0.2 to 4.5 keV band. To convert them into the 0.2−10 keV band, we multiplied them by a factor of 2.6 assuming a standard power law with photon index 0.9 (Haberl et al. 2008) and a column density of 1021 cm-2 (solar abundance). For Swift XRT count rates we used a flux conversion factor of 1.1 × 10-10 erg cm-2 cts-1 |
| 60 | Flag for minimum flux: 1 for a non-detection with an upper limit; −1 when unknown; 0 for detection. |
| 61−62 | References for maximum and minimum X-ray flux. |
| 63 | X-ray variability factor (ratio of maximum to minimum flux). |
| 64 | Equivalent width of the Hα line [Å] (minimum value if more than one measurement is available). |
| 65 | Maximum equivalent width of the Hα line [Å]. |
| 66 | References for the Hα measurements. |
| 67 | Comments with key references. |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.