DARWEN: Data-driven Algorithm for Reduction of Wide Exoplanetary Networks - An unbiased approach to accurately reducing chemical networks

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Volume 692 (December 2024)

A&A, 692 (2024) A158

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Table 1

Results for the two planets tested in this work, for each type of scheme.

Scheme type	n_mlc	n_reacs	HD 209458b				HD 189733b

			${\underset{\max}{Δ}}_{{key}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ key }}\} }^{({\rm{o}}, \bullet )}$	${\underset{\max}{Δ}}_{{major}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ major }}\} }^{({\rm{o}}, \bullet )}$	${\underset{\max}{Δ}}_{{all}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ all }}\} }^{({\rm{o}}, \bullet )}$	Time [s]	${\underset{\max}{Δ}}_{{key}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ key }}\} }^{({\rm{o}}, \bullet )}$	${\underset{\max}{Δ}}_{{major}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ major }}\} }^{({\rm{o}}, \bullet )}$	${\underset{\max}{Δ}}_{{all}}^{(o, •)}$ $\mathop \Delta \limits_{\max } _{\{ {\rm{ all }}\} }^{({\rm{o}}, \bullet )}$	Time [s]
V20	107	1904	—	—	—	500	—	—	—	650
R20	44	582	0.07	0.97	0.97	26	0.06	0.98	0.98	33
Validation	47	576	0.06	0.56	1.44	25	0.06	0.58	12.45	31
Low-cost	32	298	0.28	0.29	0.29	10	0.33	0.69	0.69	13

V20*	107	1956	–	–	–	900	–	–	–	950
Photoscheme	48	756	0.16	4.39	5.12	33	0.18	4.74	6.16	43

Notes. V20, R20 and V20* (full model by Venot et al. 2020 plus the corresponding photo reactions) are shown here for reference. n_mlc and n_reacs are the number of molecules and forward plus reverse reactions for each scheme. All schemes discrepancies are between the corresponding full model (•) and the reduced scheme in question (o). Time to reach steady state, according to our criteria (see Sect. 2.3), is measured via Terminal on a MacBook Pro 2022 with 16 GB of RAM and an M2 chip.

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