From simulations to observations: Methodology and data release of mock TNG50 galaxies at 0.3 < z < 0.7 for WEAVE-StePS

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Volume 703 (November 2025)

A&A, 703 (2025) A37

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Table 4.

Timescale of mass assembly of the example galaxies derived from the central 1.3 arcsec.

Redshift	ID	Class	$t_{10}^{sim}$ $t_{10}^{\mathrm{sim}}$	$t_{50}^{sim}$ $t_{50}^{\mathrm{sim}}$	$t_{90}^{sim}$ $t_{90}^{\mathrm{sim}}$	$t_{10}^{obs}$ $t_{10}^{\mathrm{obs}}$	$t_{50}^{obs}$ $t_{50}^{\mathrm{obs}}$	$t_{90}^{obs}$ $t_{90}^{\mathrm{obs}}$
			[Gyr]	[Gyr]	[Gyr]	[Gyr]	[Gyr]	[Gyr]
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
0.7	172231	SF	2.00	3.86	6.13	1.22 ± 0.01	2.11 ± 0.01	4.8 ± 0.3
0.5	218606	SF	2.03	4.05	7.44	0.63 ± 0.02	2.1 ± 0.3	7.0 ± 0.1
0.3	251598	GV	1.94	3.63	6.56	0.29 ± 0.03	3.3 ± 0.9	6.1 ± 0.5

0.7	222130	GV	1.37	2.40	5.05	0.99 ± 0.01	1.24 ± 0.01	5.2 ± 0.4
0.5	234935	GV	1.32	2.28	4.60	0.63 ± 0.01	1.2 ± 0.1	4.4 ± 0.5
0.3	277675	SF	1.38	2.40	5.11	0.28 ± 0.01	0.30 ± 0.06	3.9 ± 0.9

0.7	212087	Q	1.15	1.60	2.83	0.99 ± 0.01	1.00 ± 0.01	2.4 ± 0.1
0.5	253460	GV	1.13	1.57	2.74	0.63 ± 0.01	0.64 ± 0.01	2.6 ± 0.4
0.3	298351	SF	1.17	1.57	2.45	0.28 ± 0.01	0.30 ± 0.01	3.4 ± 0.7

Notes. (1) Redshift. (2) Galaxy ID. (3) Class: SF = star forming, GV = green valley, Q = quiescent. (4)−(6) Time when the galaxy formed 10%, 50%, and 90% of its stellar mass, respectively, as derived from TNG50. (7)−(9) Time when the galaxy formed 10%, 50%, and 90% of its stellar mass, respectively, as derived with pPXF from noiseless spectra.

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