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Table 1
Stellar and orbital parameters of AC Her.
| Parameter | Value | Error | Source | |
|
|
||||
| Literature | Orb. Period (d) | 1194 | 6 | 1 |
| a1 sin i (AU) | 1.39 | – | 1 | |
| e | 0.12 | 0.02 | 1 | |
| Mass function (M⊙) | 0.25 | – | 1 | |
| Pulsation Period (d) | 75.0 | – | 2 | |
| Fitted | Teff (K) | 5225 | 125 | – |
| θ⋆ (mas) | 0.353 | 0.012 | – | |
| log g | 0.65 | 0.20 | – | |
| EISM(B − V) (mag) | 0.14 | Fixed | – | |
| [Fe/H] (dex) | –1.5 | Fixed | – | |
| ia (°) | 50 | 8 | – | |
| Derived | db (kpc) | 1.6 | 0.3 | – |
| Lb (L⊙) | 2500 | 900 | – | |
| Rb (R⊙) | 61 | 12 | – | |
| M1c (M⊙) | 0.6 | 0.2 | – | |
| M2d (M⊙) | 1.2 | 0.2 | – | |
| a (AU) | 2.7 | 0.2 | – | |
Notes.
(a)
From the interferometric fit, see Sect. 6.
(b)
From the PL-relation of Alcock et al. (1998).
Reference. (1) Van Winckel et al. (1998); (2) Samus et al. (2009).
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