Tracing the evolutionary pathways of dust and cold gas in high-z quiescent galaxies with SIMBA

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Volume 693 (January 2025)

A&A, 693 (2025) A118

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Table 1.

Median roperties of SIMBA field galaxies at quenching.

	Fast	Slow

		log(f_dust) > − 4	log(f_dust) < − 4
Stellar properties
Δ_MS	$- 1 . 4_{- 0.18}^{+ 0.24}$ $-1.4^{+0.24}_{-0.18}$	$- 1 . 37_{- 0.25}^{+ 0.27}$ $-1.37^{+0.27}_{-0.25}$	$- 1 . 44_{- 0.2}^{+ 0.35}$ $-1.44^{+0.35}_{-0.2}$
log(M_⋆/M_⊙)	$10 . 23_{- 0.27}^{+ 0.4}$ $10.23^{+0.4}_{-0.27}$	$9 . 8_{- 0.39}^{+ 1.08}$ $9.8^{+1.08}_{-0.39}$	$10 . 45_{- 0.24}^{+ 0.31}$ $10.45^{+0.31}_{-0.24}$
Age[Gyr]	$1 . 69_{- 0.56}^{+ 1.55}$ $1.69^{+1.55}_{-0.56}$	$3 . 92_{- 1.7}^{+ 1.56}$ $3.92^{+1.56}_{-1.7}$	$2 . 24_{- 0.76}^{+ 1.63}$ $2.24^{+1.63}_{-0.76}$
ISM properties

log(f_dust)	$- 3 . 09_{- 0.55}^{+ 0.27}$ $-3.09^{+0.27}_{-0.55}$	$- 3 . 29_{- 0.39}^{+ 0.27}$ $-3.29^{+0.27}_{-0.39}$	$- 5 . 13_{- 0.62}^{+ 0.7}$ $-5.13^{+0.7}_{-0.62}$
log(f_H₂)	$- 1 . 37_{- 0.3}^{+ 0.2}$ $-1.37^{+0.2}_{-0.3}$	$- 1 . 37_{- 0.17}^{+ 0.17}$ $-1.37^{+0.17}_{-0.17}$	$- 1 . 2_{- 0.14}^{+ 0.13}$ $-1.2^{+0.13}_{-0.14}$
log(δ_DGR)	$- 1 . 72_{- 0.52}^{+ 0.37}$ $-1.72^{+0.37}_{-0.52}$	$- 1 . 89_{- 0.45}^{+ 0.25}$ $-1.89^{+0.25}_{-0.45}$	$- 3 . 95_{- 0.64}^{+ 0.81}$ $-3.95^{+0.81}_{-0.64}$
12 + log(O/H)	$8 . 79_{- 0.12}^{+ 0.12}$ $8.79^{+0.12}_{-0.12}$	$8 . 73_{- 0.18}^{+ 0.26}$ $8.73^{+0.26}_{-0.18}$	$8 . 96_{- 0.08}^{+ 0.07}$ $8.96^{+0.07}_{-0.08}$
log(δ_DTM)	$- 0 . 27_{- 0.39}^{+ 0.15}$ $-0.27^{+0.15}_{-0.39}$	$- 0 . 31_{- 0.42}^{+ 0.09}$ $-0.31^{+0.09}_{-0.42}$	$- 2 . 35_{- 0.64}^{+ 0.79}$ $-2.35^{+0.79}_{-0.64}$
Timescales

t_quench[Gyr]	$0 . 05_{- 0.02}^{+ 0.05}$ $0.05^{+0.05}_{-0.02}$	$0 . 82_{- 0.48}^{+ 0.98}$ $0.82^{+0.98}_{-0.48}$	$0 . 61_{- 0.28}^{+ 0.7}$ $0.61^{+0.7}_{-0.28}$
$t_{removal}^{H_{2}} [Gyr]$ $t^{{\mathrm{H}_2}}_{\mathrm{removal}} [\rm Gyr]$	$5 . 73_{- 3.0}^{+ 2.18}$ $5.73^{+2.18}_{-3.0}$	$2 . 81_{- 1.66}^{+ 4.22}$ $2.81^{+4.22}_{-1.66}$	$6 . 42_{- 2.54}^{+ 1.8}$ $6.42^{+1.8}_{-2.54}$
t_acc[Myr]	$87 . 75_{- 28.94}^{+ 28.7}$ $87.75^{+28.7}_{-28.94}$	$70 . 64_{- 42.2}^{+ 66.98}$ $70.64^{+66.98}_{-42.2}$	$86 . 66_{- 27.97}^{+ 30.82}$ $86.66^{+30.82}_{-27.97}$

Notes. Medians and associated uncertainties (16th–84th percentile range) of various physical properties related to fast and slow quenching QGs. The properties are computed for QGs corresponding to the three regions in Fig. 7 at the quenching phase (see also Fig. 8). Note that for the slow quenchers, we made additional division based on f_dust to reflect the difference between the two clouds as illustrated in Fig. 7.

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