Table 3
Coefficients of the polynomial fits between (Ks−[λ])o colours and the Qλ parameters, based on the interstellar extinction curve by Gordon et al. (2021).
| X-axis | Y-axis | Coef n1 | Coef n2 | Coef n3 | Coef n0 | σ |
|---|---|---|---|---|---|---|
| QA | (Ks−A)o | −0.2611 ± 0.0501 | −0.0003 ± 0.0067 | −0.0001 ± 0.0003 | 0.3172 ± 0.1107 | 0.20 |
| QC | (Ks−C)o | −0.2057 ± 0.0817 | 0.0047 ± 0.0071 | 0.0000 ± 0.0002 | 0.3386 ± 0.2996 | 0.20 |
| QD | (Ks−D)o | −0.2694 ± 0.0318 | 0.0039 ± 0.0015 | .. | 0.2591 ± 0.1696 | 0.22 |
| QE | (Ks−E)o | −0.2327 ± 0.0228 | 0.0020 ± 0.0008 | .. | 0.2781 ± 0.1660 | 0.21 |
| QW3 | (Ks−W3)o | −0.1942 ± 0.0271 | 0.0052 ± 0.0021 | 0.0001 ± 0.0000 | 0.3358 ± 0.1038 | 0.20 |
| QW4 | (Ks−W4)o | −0.1006 ± 0.0491 | 0.0126 ± 0.0032 | 0.0003 ± 0.0000 | 0.8190 ± 0.2360 | 0.21 |
| Q58 | (Ks-[5.8])o | −0.3599 ± 0.0414 | 0.0023 ± 0.0128 | 0.0000 ± 0.0010 | 0.4767 ± 0.0389 | 0.24 |
| Q80 | (Ks-[8.0])o | −0.3060 ± 0.0416 | 0.0052 ± 0.0093 | 0.0004 ± 0.0006 | 0.3977 ± 0.0538 | 0.23 |
Notes. Y-Fit = Coef n1 x X-axis + Coef n2 × (X-axis)2 + Coef n3 × (X-axis)3 +Coef n0. The colours used for the fit are those dereddened with the ![$\[A_{K_{\mathrm{s}}}\]$](/articles/aa/full_html/2024/06/aa47661-23/aa47661-23-eq50.png){kind=small}
(int) from surrounding stars by Messineo et al. (2005, 2018) rescaled to a power law with an index of −2.1 and Gordon's extinction curve.
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