Open Access
Table 3
Physical parameters of [W60] B90 from spectroscopy.
Atomic lines in the J-band(a) | ||||||
---|---|---|---|---|---|---|
Name | Model | Z (dex) | Teff,J (K) | log(g) (dex) | χ2 | |
EpochJ | MARCS LTE | ![]() |
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63.1 | |
MARCS NLTE | ![]() |
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36.4 | ||
TiO bands from the optical | ||||||
Spectral type | ATLAS o (mag) | Teff,TiO (K) | E(B − V) (mag) | Av (b) (mag) | χ2 | |
Epoch1(c) | M3 I | − | 3550±40 | 1.00±0.15 | 3.41±0.51 | 13.0 |
Epoch2 | M4 I | 12.6±0.1 | ![]() |
1.10±0.10 | 3.75±0.34 | 193.7 |
Epoch3 | M3 I | 12.3±0.1 | ![]() |
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47.9 |
Epoch4 | M3 I | 11.8±0.1 | ![]() |
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26.9 |
Notes. (a) Assuming Z = −0.25 dex and log g = −0.2 dex from the J-band fit.(b)Converted from E(B − V) assuming RV = 3.41. (c) and E(B − V) = 1.00 ± 0.14 mag from de Wit et al. (2023).
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