Performance of photometric template fitting for ultra-high-redshift galaxies

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Volume 697 (May 2025)

A&A, 697 (2025) A160

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Table 3

UNCOVER z > 5 photometric redshift performance metrics.

Template	Δ_bias,z>5	σ_nmad,z>5	η_f,z>5	η_c,z>5	s_z>5
	(%)	(%)	(%)	(%)	(%)
`A22`	$- {5.1}_{- 0.5}^{+ 0.4}$ $-5.1_{-0.5}^{+0.4}$	23.6 ± 0.5	9.7 ± 0.5	9.9 ± 0.5	${99.8}_{- 0.2}^{+ 0.1}$ $99.8_{-0.2}^{+0.1}$
`BlSFH`	−5.2 ± 0.6	${21.0}_{- 1.0}^{+ 0.9}$ $21.0_{-1.0}^{+0.9}$	7.7 ± 0.7	9.5 ± 0.6	98.2 ± 0.4
`CaSFH`	−6.5 ± 0.6	22.8 ± 0.9	9.8 ± 0.9	${11.6}_{- 0.8}^{+ 0.9}$ $11.6_{-0.8}^{+0.9}$	98.2 ± 0.4
`Ev3`	−21.8 ± 0.7	35.2 ± 0.3	32 ± 1	34.7 ± 0.9	${97.0}_{- 0.5}^{+ 0.4}$ $97.0_{-0.5}^{+0.4}$
`L23`	−2.1 ± 0.6	17 ± 1	${5.8}_{- 0.7}^{+ 0.8}$ $5.8_{-0.7}^{+0.8}$	7.8 ± 0.6	98.0 ± 0.4
`S23`	$- {1.7}_{- 0.3}^{+ 0.2}$ $-1.7_{-0.3}^{+0.2}$	13.2 ± 0.4	5.0 ± 0.3	5.0 ± 0.3	100 ± 0
`T22`	−4.0 ± 0.6	23.4 ± 0.7	9.4 ± 0.6	9.7 ± 0.6	99.6 ± 0.2
`TwSPS`	−38 ± 1	${39.7}_{- 0.3}^{+ 0.2}$ $39.7_{-0.3}^{+0.2}$	45 ± 1	53 ± 1	92 ± 1

Notes. Overview of template performance within the z_spec > 5 UNCOVER sample. Specific metrics are defined above (Sect. 3.1). The UNCOVER survey demonstrates the possibility of strong performance with the high depth of a lensed field despite fewer available filters. In such a survey, S23 can achieve a complete sample with <5% catastrophic outliers. However, there is a lower fit completeness rate across several templates, indicating missing representation. With both low bias and deviation, results suggest that S23 is more physically representative.

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