Cross-correlation between soft X-rays and galaxies - A new benchmark for galaxy evolution models

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Volume 697 (May 2025)

A&A, 697 (2025) A173

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Table 4.

Best-fit parameters obtained by fitting the model on the galaxy-event cross-correlation.

Sample	Surface brightness profile model				Deduced L_X [10⁴⁰erg s⁻¹]

M₀^*	α_SR	Δ_{M_min}	w₀	$\frac{χ^{2}}{n d . o . f .}$ $\frac{\chi^2}{n\mathrm{d.o.f.}}$	Point source	hot gas
10.0	$1 . 629_{- 0.089}^{+ 0.091}$ $1.629^{+0.091}_{-0.089}$	$0 . 911_{- 0.101}^{+ 0.099}$ $0.911^{+0.099}_{-0.101}$	0.011	$0 . 918_{- 0.5501}^{+ 0.5114}$ $0.918^{+0.5114}_{-0.5501}$	$3 . 59_{- 0.15}^{+ 0.16}$ $3.59^{+0.16}_{-0.15}$	$7 . 81_{- 0.16}^{+ 0.16}$ $7.81^{+0.16}_{-0.16}$
10.25	$1 . 573_{- 0.07}^{+ 0.077}$ $1.573^{+0.077}_{-0.07}$	$1 . 007_{- 0.087}^{+ 0.093}$ $1.007^{+0.093}_{-0.087}$	0.014	$0 . 83_{- 0.5423}^{+ 0.5237}$ $0.83^{+0.5237}_{-0.5423}$	$4 . 54_{- 0.18}^{+ 0.19}$ $4.54^{+0.19}_{-0.18}$	$11 . 6_{- 0.18}^{+ 0.18}$ $11.6^{+0.18}_{-0.18}$
10.5	$1 . 612_{- 0.072}^{+ 0.068}$ $1.612^{+0.068}_{-0.072}$	$1 . 131_{- 0.101}^{+ 0.109}$ $1.131^{+0.109}_{-0.101}$	0.016	$0 . 752_{- 0.534}^{+ 0.5395}$ $0.752^{+0.5395}_{-0.534}$	$6 . 2_{- 0.28}^{+ 0.22}$ $6.2^{+0.22}_{-0.28}$	$15 . 64_{- 0.18}^{+ 0.18}$ $15.64^{+0.18}_{-0.18}$
10.75	$1 . 654_{- 0.104}^{+ 0.166}$ $1.654^{+0.166}_{-0.104}$	$0 . 851_{- 0.331}^{+ 0.358}$ $0.851^{+0.358}_{-0.331}$	0.019	$1 . 083_{- 0.6232}^{+ 0.448}$ $1.083^{+0.448}_{-0.6232}$	$8 . 63_{- 0.54}^{+ 0.66}$ $8.63^{+0.66}_{-0.54}$	$18 . 27_{- 0.55}^{+ 0.56}$ $18.27^{+0.56}_{-0.55}$
11.0	$1 . 634_{- 0.094}^{+ 0.066}$ $1.634^{+0.066}_{-0.094}$	$1 . 221_{- 0.421}^{+ 0.279}$ $1.221^{+0.279}_{-0.421}$	0.021	$1 . 103_{- 0.3429}^{+ 0.7386}$ $1.103^{+0.7386}_{-0.3429}$	$7 . 6_{- 0.28}^{+ 0.75}$ $7.6^{+0.75}_{-0.28}$	$42 . 11_{- 1.08}^{+ 0.93}$ $42.11^{+0.93}_{-1.08}$
11.25	$1 . 713_{- 0.143}^{+ 0.087}$ $1.713^{+0.087}_{-0.143}$	$2 . 181_{- 2.041}^{+ 1.779}$ $2.181^{+1.779}_{-2.041}$	0.021	$0 . 865_{- 0.3646}^{+ 0.7073}$ $0.865^{+0.7073}_{-0.3646}$	$7 . 43_{- 0.05}^{+ 0.21}$ $7.43^{+0.21}_{-0.05}$	$137 . 91_{- 3.09}^{+ 3.07}$ $137.91^{+3.07}_{-3.09}$
11.5	$1 . 544_{- 0.244}^{+ 0.256}$ $1.544^{+0.256}_{-0.244}$	$2 . 054_{- 1.924}^{+ 1.906}$ $2.054^{+1.906}_{-1.924}$	0.021	$0 . 788_{- 0.0819}^{+ 0.2152}$ $0.788^{+0.2152}_{-0.0819}$	$5 . 53_{- 0.01}^{+ 0.07}$ $5.53^{+0.07}_{-0.01}$	$401 . 2_{- 12.99}^{+ 12.32}$ $401.2^{+12.32}_{-12.99}$

Notes. Best-fit parameters (α_SR, Δ_{M_min} and their 1σ uncertainties) obtained by fitting the model on the galaxy-event cross-correlation (Fig. 3). The w₀ is parameter fixed. The parameters are described in Sect. 4. Deduced quantities are obtained by integrating the model profiles.

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