Modelling of surface brightness fluctuation measurements - Methodology, uncertainty, and recommendations

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Volume 686 (June 2024)

A&A, 686 (2024) A62

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Table 4.

Results of tracing an SBF radial profile over different annular masks, as in Fig. 13.

Mask (r₁; r₂)	n_mask pix [px]	r _⟨SBF⟩ [px]	N_⟨SBF⟩	$⟨ {\bar{N}}_{fit} ⟩$ $\langle \bar{N}_{\mathrm{fit}} \rangle$	ε_rel, 90% [%]	σ_fit, 90% [%]	Δ_90% [%]	m_⟨SBF⟩	${\bar{m}}_{fit}$ ${\bar{m}}_{\mathrm{fit}}$
4; 154	74 432	96	15.95	15.8±0.8	5.3	0.9	9.8	31.02	31.03±0.05
156; 220	75 616	189	17.98	18.0 $\pm_{1.3}^{1.6}$ $\pm ^{1.6}_{1.3}$	7.5	0.8	15.9	30.89	30.89 $\pm_{0.09}^{0.08}$ $\pm^{0.08}_{0.09}$
222; 270	74 240	246	18.83	18.8±1.2	6.1	0.8	12.5	30.84	30.84±0.07
272; 312	73 404	292	19.40	19.5±1.1	5.8	0.7	11.2	30.81	30.80±0.06
314; 350	75 068	332	19.84	20.0±1	5.5	0.7	9.8	30.78	30.78±0.05
352; 384	74 020	368	20.20	20.1 $\pm_{1.2}^{1.1}$ $\pm^{1.1}_{1.2}$	5.6	0.7	11.7	30.76	30.77 $\pm_{0.06}^{0.07}$ $\pm^{0.07}_{0.06}$
386; 416	75 572	401	20.50	20.4 $\pm_{1.6}^{1.5}$ $\pm^{1.5}_{1.6}$	7.2	0.7	15.3	30.75	30.75 $\pm_{0.08}^{0.09}$ $\pm^{0.09}_{0.08}$

Notes. Column 1: radii (r₁, r₂) that constrict each annular mask. Column 2: number of pixels within the mask. Column 3: radius associated with the weighted average SBF of each mask. Column 4: weighted average of the SBF in counts. Column 5: mean fitted SBF over 50 simulations in counts. Column 6: 90% percentile of the relative error. Column 7: 90% percentile of the relative standard deviation of the fitting. Column 8: relative 90% width of the ${\bar{N}}_{fit}$ $\bar{N}_{\mathrm{fit}}$ distribution. Column 9: magnitude of the weighted average SBF. Column 10: mean fitted SBF over 50 simulations in magnitudes.

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