Euclid preparation - LXXXVI. Cosmic Dawn Survey: Evolution of the galaxy stellar mass function across 0.2 < z ≤ 6.5 measured over 10 square degrees

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Volume 708 (April 2026)

A&A, 708 (2026) A104

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Table A.3.

Double (z ≤ 0.8) and single (z > 0.8) Schechter parameters derived for the quiescent mass-complete subsample.

z-bin	log₁₀ ℳ^*	α₁	log₁₀ Φ₁	α₂	log₁₀ Φ₂
	(M_⊙)		(Mpc⁻³ dex⁻¹)		(Mpc⁻³ dex⁻¹)
MCMC fit

0.2 < z ≤ 0.5	$10 . 87_{- 0.05}^{+ 0.05} [10.91]$ $Mathematical equation: $ 10.87^{+0.05}_{-0.05}[10.91] $$	$- 1 . 85_{- 0.32}^{+ 0.29} [- 2.34]$ $Mathematical equation: $ -1.85^{+0.29}_{-0.32}[-2.34] $$	$- 4 . 88_{- 0.33}^{+ 1.18} [- 5.87]$ $Mathematical equation: $ -4.88^{+1.18}_{-0.33}[-5.87] $$	$- 0 . 48_{- 0.11}^{+ 0.14} [- 0.59]$ $Mathematical equation: $ -0.48^{+0.14}_{-0.11}[-0.59] $$	$- 2 . 86_{- 0.05}^{+ 0.05} [- 2.88]$ $Mathematical equation: $ -2.86^{+0.05}_{-0.05}[-2.88] $$
0.5 < z ≤ 0.8	$10 . 83_{- 0.03}^{+ 0.03} [10.84]$ $Mathematical equation: $ 10.83^{+0.03}_{-0.03}[10.84] $$	$- 1 . 66_{- 0.46}^{+ 0.45} [- 2.48]$ $Mathematical equation: $ -1.66^{+0.45}_{-0.46}[-2.48] $$	$- 5 . 00_{- 0.37}^{+ 2.28} [- 6.39]$ $Mathematical equation: $ -5.00^{+2.28}_{-0.37}[-6.39] $$	$- 0 . 39_{- 0.07}^{+ 0.09} [- 0.44]$ $Mathematical equation: $ -0.39^{+0.09}_{-0.07}[-0.44] $$	$- 2 . 87_{- 0.04}^{+ 0.03} [- 2.86]$ $Mathematical equation: $ -2.87^{+0.03}_{-0.04}[-2.86] $$
0.8 < z ≤ 1.1	$10 . 74_{- 0.02}^{+ 0.02} [10.74]$ $Mathematical equation: $ 10.74^{+0.02}_{-0.02}[10.74] $$	–	–	$- 0 . 17_{- 0.04}^{+ 0.04} [- 0.18]$ $Mathematical equation: $ -0.17^{+0.04}_{-0.04}[-0.18] $$	$- 3 . 09_{- 0.02}^{+ 0.02} [- 3.09]$ $Mathematical equation: $ -3.09^{+0.02}_{-0.02}[-3.09] $$
1.1 < z ≤ 1.5	$10 . 62_{- 0.03}^{+ 0.02} [10.62]$ $Mathematical equation: $ 10.62^{+0.02}_{-0.03}[10.62] $$	–	–	$0 . 46_{- 0.07}^{+ 0.07} [0.45]$ $Mathematical equation: $ 0.46^{+0.07}_{-0.07}[0.45] $$	$- 3 . 31_{- 0.01}^{+ 0.01} [- 3.30]$ $Mathematical equation: $ -3.31^{+0.01}_{-0.01}[-3.30] $$
1.5 < z ≤ 2.0	$10 . 82_{- 0.03}^{+ 0.02} [10.84]$ $Mathematical equation: $ 10.82^{+0.02}_{-0.03}[10.84] $$	–	–	$0 . 10_{- 0.07}^{+ 0.11} [0.02]$ $Mathematical equation: $ 0.10^{+0.11}_{-0.07}[0.02] $$	$- 3 . 88_{- 0.01}^{+ 0.01} [- 3.89]$ $Mathematical equation: $ -3.88^{+0.01}_{-0.01}[-3.89] $$
2.0 < z ≤ 2.5	$10 . 95_{- 0.05}^{+ 0.04} [10.98]$ $Mathematical equation: $ 10.95^{+0.04}_{-0.05}[10.98] $$	–	–	$0 . 05_{- 0.05}^{+ 0.18} [0.00]$ $Mathematical equation: $ 0.05^{+0.18}_{-0.05}[0.00] $$	$- 4 . 62_{- 0.04}^{+ 0.04} [- 4.62]$ $Mathematical equation: $ -4.62^{+0.04}_{-0.04}[-4.62] $$
2.5 < z ≤ 3.0	$10 . 93_{- 0.23}^{+ 0.17} [11.12]$ $Mathematical equation: $ 10.93^{+0.17}_{-0.23}[11.12] $$	–	–	$0 . 45_{- 0.40}^{+ 0.85} [0.00]$ $Mathematical equation: $ 0.45^{+0.85}_{-0.40}[0.00] $$	$- 5 . 47_{- 0.23}^{+ 0.70} [- 5.49]$ $Mathematical equation: $ -5.47^{+0.70}_{-0.23}[-5.49] $$

Notes. Values are shown for the median posterior distributions with even-tailed 68% range, and the values corresponding to the maximum likelihood solution in brackets.

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