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Table 1.

Biases and uncertainties in idenfifying and quantifying bars in the simulated low-resolution JWST images.

F115W
n Δ a obs n / a bar , true ¯ $ \overline{\Delta{a_{\mathrm{obs}}^{n}}/a_{\mathrm{bar,\,true}}} $ σ Δ a obs n / a bar , true $ \sigma_{\Delta{a_{\mathrm{obs}}^{n}}/a_{\mathrm{bar,\,true}}} $ Δ ϵ obs n / ϵ bar , true ¯ $ \overline{\Delta{\epsilon_{\mathrm{obs}}^{n}}/\epsilon_{\mathrm{bar,\,true}}} $ σ Δ ϵ obs n / ϵ bar , true $ \sigma_{\Delta{\epsilon_{\mathrm{obs}}^{n}}/\epsilon_{\mathrm{bar,\,true}}} $ Δ PA obs n ¯ $ \overline{\Delta{\mathrm{PA}_{\mathrm{obs}}^{n}}} $ σ Δ PA obs n $ \sigma_{\Delta{\mathrm{PA}_{\mathrm{obs}}^{n}}} $ ηeff
(°) (°)
(1) (2) (3) (4) (5) (6) (7) (8)
10 −0.03 0.08 −0.07 0.06 −0.12 2.58 1.00
5.16 −0.02 0.10 −0.18 0.08 −0.19 3.25 1.00
4.3 −0.02 0.11 −0.22 0.08 −0.16 4.02 0.99
3.58 −0.01 0.12 −0.28 0.10 −0.29 4.70 0.98
2.99 −0.02 0.14 −0.34 0.11 −0.48 5.78 0.89
2.49 −0.02 0.14 −0.40 0.11 −0.51 5.78 0.69
2.07 0.03 0.14 −0.42 0.12 −0.53 6.46 0.35
1.73 0.12 0.17 −0.45 0.14 0.20 5.70 0.11
1.44 0.11 0.00 −0.57 0.02 −8.33 8.92 0.01
1.2 ⋯ ⋯ ⋯ ⋯ ⋯ ⋯ 0.00
1 ⋯ ⋯ ⋯ ⋯ ⋯ ⋯ 0.00
F150W
10 −0.02 0.08 −0.04 0.05 −0.18 2.14 1.00
5.16 −0.03 0.10 −0.14 0.08 −0.17 2.46 1.00
4.3 −0.01 0.10 −0.18 0.09 −0.09 3.37 1.00
3.58 −0.02 0.11 −0.23 0.10 −0.13 4.06 0.99
2.99 −0.03 0.13 −0.29 0.10 −0.24 4.64 0.98
2.49 −0.04 0.12 −0.34 0.10 −0.33 4.98 0.94
2.07 −0.01 0.12 −0.39 0.11 −0.39 5.58 0.81
1.73 0.03 0.13 −0.44 0.12 −0.69 6.27 0.53
1.44 0.11 0.16 −0.46 0.11 0.20 7.44 0.17
1.2 0.15 0.14 −0.51 0.12 2.73 5.53 0.02
1 ⋯ ⋯ ⋯ ⋯ ⋯ ⋯ 0.00
F200W
10 −0.01 0.07 −0.02 0.04 0.05 1.70 1.00
5.16 −0.01 0.09 −0.10 0.08 −0.20 2.32 1.00
4.3 −0.02 0.09 −0.15 0.09 −0.25 2.87 1.00
3.58 −0.02 0.12 −0.20 0.10 −0.27 3.79 1.00
2.99 −0.04 0.13 −0.25 0.11 −0.27 4.05 0.99
2.49 −0.06 0.11 −0.30 0.10 −0.34 4.23 0.95
2.07 −0.03 0.10 −0.34 0.10 −0.34 4.90 0.84
1.73 0.02 0.13 −0.40 0.11 −0.43 6.37 0.59
1.44 0.10 0.17 −0.46 0.11 0.25 8.38 0.26
1.2 0.17 0.18 −0.49 0.10 0.98 7.38 0.06
1 0.19 0.15 −0.54 0.08 0.42 6.54 0.03

Notes. Col. (1) lists the resolution level n = abar,  true/FWHM; Col. (2) the averaged value of the fractional difference Δ a obs n / a bar , true $ {{\Delta} a_{\mathrm{obs}}^{n} / a_{\mathrm{bar,\,true}}} $, where Δ a obs n = ( a obs n − a bar , true ) $ {\Delta} a_{\mathrm{obs}}^{n} = (a_{\mathrm{obs}}^{n} - a_{\mathrm{bar,\,true}}) $; Col. (3) the standard deviation of Δ a obs n / a bar , true $ {{\Delta} a_{\mathrm{obs}}^{n} / a_{\mathrm{bar,\,true}}} $; Col. (4) the averaged value of the fractional difference Δ ϵ obs n / ϵ bar , true $ \Delta{\epsilon_{\mathrm{obs}}^{n}}/\epsilon_{\mathrm{bar,\,true}} $, where Δ ϵ obs n = ( ϵ obs n − ϵ bar , true ) $ {\Delta} \epsilon_{\mathrm{obs}}^{n} = (\epsilon_{\mathrm{obs}}^{n} - \epsilon_{\mathrm{bar,\,true}}) $; Col. (5) the standard deviation of Δ ϵ obs n / ϵ bar , true $ {{\Delta} \epsilon_{\mathrm{obs}}^{n} / \epsilon_{\mathrm{bar,\,true}}} $; Col. (6) the averaged value of the difference Δ PA obs n = PA obs n − PA bar , true $ \Delta{\mathrm{PA}_{\mathrm{obs}}^{n}} = \mathrm{PA}_{\mathrm{obs}}^{n}-\mathrm{PA}_{\mathrm{bar,\,true}} $; Col. (7) the standard deviation of PA obs n $ \mathrm{PA}_{\mathrm{obs}}^{n} $; and Col. (8) the effectiveness of detecting bars at a specific resolution level.

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