Weak lensing constraints on the stellar-to-halo mass relation of galaxy groups with simulation-informed scatter

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Volume 700 (August 2025)

A&A, 700 (2025) A202

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Table A.1.

Shear biases constrained from Eq. (A.1) for different samples.

Sample	${\tilde{m}}_{i} [10^{- 3}]$ $\tilde{m}_i\ [10^{-3}]$	${\tilde{c}}_{i} [10^{- 5}]$ $\tilde{c}_i\ [10^{-5}]$	${\tilde{d}}_{i} [10^{- 3}]$ $\tilde{d}_i\ [10^{-3}]$	${\tilde{q}}_{i} [10^{- 1}]$ $\tilde{q}_i\ [10^{-1}]$	${\tilde{m}}_{⊥, i} [10^{- 4}]$ $\tilde{m}_{\perp,i}\ [10^{-4}]$

	i = 1
Complete	0.042 ± 0.000	0.000 ± 0.002	0.000 ± 0.002	0.000 ± 0.000	0.792 ± 0.002
SExtractor (20, 24.5)	−23.22 ± 0.069	−1.314 ± 0.250	−0.497 ± 0.451	0.262 ± 0.058	0.919 ± 0.379
lensfit selection	−13.63 ± 0.142	−0.568 ± 0.582	−2.514 ± 0.871	−0.041 ± 0.116	4.289 ± 0.693
lensfit measurement	0.808 ± 0.140	0.040 ± 0.578	−6.505 ± 0.936	−4.388 ± 0.119	2.431 ± 0.741

	i = 2

Complete	−0.042 ± 0.000	0.000 ± 0.002	0.000 ± 0.002	0.002 ± 0.000	0.795 ± 0.002
SExtractor (20, 24.5)	−23.32 ± 0.083	1.903 ± 0.305	1.216 ± 0.527	0.148 ± 0.070	2.853 ± 0.437
lensfit selection	−12.56 ± 0.173	−3.208 ± 0.644	−3.270 ± 1.006	−0.478 ± 0.137	1.459 ± 0.858
lensfit measurement	1.686 ± 0.179	−1.661 ± 0.698	−3.147 ± 1.044	−4.609 ± 0.139	3.234 ± 0.876

Notes. The first three samples are based on a perfect galaxy shape measurement of Eq. (A.2) but with different sample selections. The label ‘Complete’ refers to the full sample with perfect shape noise cancellation, ‘SExtractor (20, 24.5)’ indicates the sample detected by SExtractor with observed magnitudes in the range of (20, 24.5), and ‘lensfit selection’ denotes samples further selected by lensfit. The ‘lensfit measurement’ sample is the usual sample with galaxy shapes measured by lensfit.

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