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 3.

Mass-weighted ages and metallicities of the example galaxies.

z	ID	Class	age $_{sim}^{total}$ $_{\mathrm{sim}}^{\mathrm{total}}$	age $_{sim}^{fibre}$ $_{\mathrm{sim}}^{\mathrm{fibre}}$	age $_{obs}^{total}$ $_{\mathrm{obs}}^{\mathrm{total}}$	age $_{obs}^{fibre}$ $_{\mathrm{obs}}^{\mathrm{fibre}}$	[Z/H] $_{sim}^{total}$ $_{\mathrm{sim}}^{\mathrm{total}}$	[Z/H] $_{sim}^{fibre}$ $_{\mathrm{sim}}^{\mathrm{fibre}}$	[Z/H] $_{obs}^{total}$ $_{\mathrm{obs}}^{\mathrm{total}}$	[Z/H] $_{obs}^{fibre}$ $_{\mathrm{obs}}^{\mathrm{fibre}}$
			[Gyr]	[Gyr]	[Gyr]	[Gyr]	[dex]	[dex]	[dex]	[dex]
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)
0.7	172231	SF	3.29	3.39	3.8 ± 0.2	4.0 ± 0.2	0.08	0.26	−0.58 ± 0.04	−0.56 ± 0.04
0.5	218606	SF	4.23	4.28	4.8 ± 0.3	4.6 ± 0.3	0.09	0.29	−0.13 ± 0.02	−0.02 ± 0.02
0.3	251598	GV	5.87	6.31	6.3 ± 0.2	6.0 ± 0.3	0.09	0.31	−0.17 ± 0.03	0.06 ± 0.03

0.7	222130	GV	4.12	4.50	4.9 ± 0.2	4.7 ± 0.2	0.12	0.29	−0.06 ± 0.02	−0.08 ± 0.02
0.5	234935	GV	5.30	5.94	5.7 ± 0.2	6.0 ± 0.3	0.10	0.31	−0.08 ± 0.02	0.09 ± 0.02
0.3	277675	SF	6.31	7.38	8.4 ± 0.4	8.0 ± 0.4	0.08	0.32	−0.47 ± 0.05	0.02 ± 0.03

0.7	212087	Q	5.38	5.53	5.5 ± 0.1	5.6 ± 0.1	0.13	0.28	−0.08 ± 0.02	0.04 ± 0.01
0.5	253460	GV	6.67	6.84	6.9 ± 0.2	7.0 ± 0.2	0.13	0.29	−0.08 ± 0.01	0.04 ± 0.01
0.3	298351	SF	8.28	8.59	8.5 ± 0.5	8.5 ± 0.2	0.12	0.31	0.03 ± 0.04	0.08 ± 0.01

Notes. (1) Redshift. (2) Galaxy ID. (3) Class: SF = star forming, GV = green valley, Q = quiescent. (4) Mass-weighted age of the entire galaxy derived from TNG50. (5) Mass-weighted age of the central 1.3 arcsec derived from TNG50. (6) Mass-weighted age of the entire galaxy derived with pPXF from noiseless spectra. (7) Mass-weighted age of the central 1.3 arcsec derived with pPXF from noiseless spectra. (8) Mass-weighted metallicity of the entire galaxy derived from TNG50. (9) Mass-weighted metallicity of the central 1.3 arcsec derived from TNG50. (10) Mass-weighted metallicity of the entire galaxy derived with pPXF from noiseless spectra. (11) Mass-weighted metallicity of the central 1.3 arcsec derived with pPXF from noiseless spectra.

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