Table 2
Summary of the new and archival data used.
| Instrument | Type | Spectral coverage | Spectral resolution | S/N | Continuum ? | Refs. |
|---|---|---|---|---|---|---|
| VLT/NaCo | J-band photometry | 1.255 ± 0.193 µm | <30 | ~3 | Yes | (a) |
| H-band photometry | 1.655 ± 0.307 µm | <30 | ~4 | Yes | ||
| Ks-band photometry | 2.159 ± 0.324 µm | <30 | ~7 | Yes | ||
| L’-band photometry | 3.813 ± 0.573 µm | <30 | ~9 | Yes | ||
| [4.05] photometry | 4.056 ± 0.0.060 µm | <30 | ~4 | Yes | ||
| M’-band photometry | 4.818 ± 0.416 µm | <30 | ~7 | Yes | ||
| Magellan/VisAO | Ys-band photometry | 0.985 ± 0.084 µm | <30 | ~9 | Yes | (a) |
| Magellan/Clio | [3.1] photometry | 3.102 ± 0.090 µm | <30 | ~15 | Yes | (a) |
| [3.3] photometry | 3.345 ± 0.300 µm | <30 | ~11 | Yes | ||
| L’-band photometry | 3.761 ± 0.619 µm | <30 | ~15 | Yes | ||
| M’-band photometry | 4.687 ± 0.185 µm | <30 | ~7 | Yes | ||
| VLT/SPHERE | YJ-band spectroscopy | 0.95–1.35 µm | ~50 | ~22.5 | Yes | (*) |
| H-band photometry | 1.59 µm and 1.667 µm | <30 | ~39 | Yes | ||
| Gemini/GPI | YJHK-band spectroscopy | 0.9–2.4 µm | ~45 | ~10 | Yes | (b) |
| VLTI/GRAVITY | K-band spectroscopy | 1.97–2.4 µm | ~4000 | ~20 | Yes | (**) |
| VLT/SINFONI | K-band spectroscopy | 1.929–2.472 µm | 4120 | ~20 | No | (c) |
| VLT/CRIRES+ | K-band spectroscopy | 2.06–2.47 µm | ~100 000 | >5 | No | (d, e) |
| M-band spectroscopy | 3.51–5.22 µm | ~100 000 | >5 | No | ||
| VLTI/MATISSE | LM-band spectroscopy | 2.76–4.99 µm | 387–700 | ~35 | Yes | (f) |
| JWST/MIRI | M-band spectroscopy | 4.90–6.8 µm | 30–40 | ~15 | Yes | (g) |
Notes. The first column contains the name of the instrument, the second the type (spectroscopy or photometry), the third the wavelength coverage, the fourth the (effective) spectral resolution Rλ, the fifth the average S/N, and the last indicates whether the data has continuum information or not. (a)Morzinski et al. (2015), (b)Chilcote et al. (2017), (c)Kiefer et al. (2024), (d)Landman et al. (2024), (e)Parker et al. (2024), (f)Houllé et al. (2025), (g)Worthen et al. (2024) obtainable from DOI, (*)unpublished, and (**)this work.
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