The robustness in identifying and quantifying high-redshift bars using JWST observations

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Volume 688 (August 2024)

A&A, 688 (2024) A158

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Table 3.

Bar fractions measured from simulated CEERS images at different redshift using different methods.

z	f_{bar, obs}(ellipse)	$f_{bar, obs}^{F 200 W}$ $f_{\mathrm{bar,\,obs}}^{F200W}$ (cut)	$f_{bar, obs}^{F 277 W}$ $f_{\mathrm{bar,\,obs}}^{F277W}$ (cut)	$f_{bar, obs}^{F 356 W}$ $f_{\mathrm{bar,\,obs}}^{F356W}$ (cut)	$f_{bar, obs}^{F 444 W}$ $f_{\mathrm{bar,\,obs}}^{F444W}$ (cut)
(1)	(2)	(3)	(4)	(5)	(6)
0.0	0.68	0.68	0.68	0.68	0.68
0.75	0.62	0.55	0.46	0.36	0.27
1.0	0.58	0.51	0.40	0.29	0.19
1.25	0.52	0.47	0.35	0.23	0.15
1.5	0.50	0.45	0.32	0.19	0.13
1.75	0.47	0.42	0.29	0.17	0.10
2.0	0.42	0.40	0.27	0.15	0.08
2.25	0.40	0.39	0.25	0.15	0.08
2.5	0.39	0.38	0.23	0.14	0.06
2.75	0.38	0.37	0.22	0.13	0.06
3.0	0.38	0.37	0.21	0.12	0.06

Notes. Col. (1) lists the redshift; Col. (2) the bar fraction (f_{bar, obs}) measured from simulated CEERS images using the ellipse fitting method as described in Sect 2; and Cols. (3)–(6) the f_{bar, obs} estimated from simulated CEERS images by adopting the cut of a_{bar, true} > 2 × FWHM for the bar detection for four different NIRcam filters.

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