Open Access
Table 1
Catalogues and their references used to build the multiwavelength inputs to the machine learning algorithm.
| Observation type | Instrument | Spectral band | Input provided | NAGN1 | Reference |
|---|---|---|---|---|---|
| Soft X-ray | ROSAT | 0.1–2.4 keV | X-ray flux and err. | 19 896 | Boller et al. (2016) |
| XMM-Newton | 0.2–12 keV | 1468 | Saxton et al. (2008) | ||
| Mid-Infrared photometry | WISE | 3.4–22 μm | W1,W2,W3,W4 mag. and err. | 21 050 | Cutri et al. (2021) |
| Optical photometry | SDSS I–IV | 3543–9134 Å | ugriz mag. and err. | 21 050 | Blanton et al. (2017) Arenou et al. (2017) |
| Gaia | 330–1050 nm | Flux and err. | |||
| Optical spectroscopy | SDSS I–III | 380–920 nm | Classification | 9944 | Dwelly et al. (2017) |
| see Ref. | redshift | Véron-Cetty & Véron (2010) | |||
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