A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) - VIII. Modeling ram pressure stripping of diffuse gas in the Virgo cluster spiral galaxy NGC 4330

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Volume 645 (January 2021)

A&A, 645 (2021) A121

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Table 4.

Model fitting results.

Downturn	Δt_peak		Tail	Δt_peak
	(Myr)	Goodness		(Myr)	Goodness
With diffuse ISM	Component

Variable Ly_scale	Parameter

2bnew_63	−10	15 120	5dnew_58	−120	17 351
3dnew_51	−190	15 109	4new_47	−140	17 268
2dnew_61	−90	15 082	5cnew_57	−100	17 261
2dnew_62	−80	15 071	5cnew_58	−90	17 254
4anew_60	+20	15 066	4cnew_57	−100	17 221
1bnew_48	−160	15 053	4cnew_56	−110	17 214
2new_76	+150	15 049	5cnew_66	−10	17 196
1cnew_47	−200	15 048	5bnew_63	−10	17 196
2anew_64	+60	15 047	1cnew_46	−210	17 175
2bnew_62	−20	15 045	5bnew_69	+50	17 174
1dnew_55	−130	15 043	1bnew_47	−170	17 159
2anew_42	−160	15 039	4dnew_58	−120	17 132

Constant Ly_scale	Parameter

4anew_60	+20	15 039	5cnew_58	−90	17 135
2dnew_62	−80	15 036	4dnew_58	−120	17 113
1bnew_48	−160	14 917	4cnew_56	−110	17 029
1dnew_55	−150	14 875	5cnew_65	−20	17 023
1dnew_41	−290	14 857	4new_61	0	17 022
1cnew_54	−130	14 854	5cnew_57	−100	17 001
2cnew_75	+80	14 814	4anew_47	−110	16 968
2anew_47	−110	14 812	5dnew_76	+60	16 950
2cnew_78	+110	14 768	1dnew_47	−230	16 903
2cnew_76	+90	14 746	5new_62	+10	16 900
2cnew_66	−10	14 727	5bnew_63	−10	16 823
2dnew_61	−90	14 720	4dnew_57	−130	16 820

Without diffuse ISM	Component

Variable Ly_scale	Parameter

3d_44	−260	15 074	2_58	−30	17 461
2b_80	+160	15 030	4d_70	0	17 408
3d_41	−290	15 012	2_57	−40	17 398
1c_42	−250	15 006	1a_48	−100	17 390
1_43	−180	14 983	2a_58	0	17 362
1b_42	−220	14 973	3b_48	−160	17 357
3_41	−200	14 962	2d_66	−40	17 356
2a_66	+80	14 961	4_54	−70	17 355
4c_68	+10	14 960	2_56	−50	17 355
2a_65	+70	14 958	2c_74	+70	17 333
3d_42	−280	14 954	2b_57	−70	17 324
3d_43	−270	14 950	3_47	−140	17 324

Constant Ly_scale	Parameter

2b_80	+160	15 008	2a_58	0	17 360
3d_44	−260	14 860	2d_66	−40	17 339
2a_63	+50	14 733	2d_70	0	17 294
2a_66	+80	14 717	3_47	−140	17 285
2a_65	+70	14 599	1d_58	−120	17 230
1d_41	−290	14 565	2c_72	+50	17 190
3c_46	−210	14 484	3d_58	−120	17 185
2c_67	0	14 448	2d_77	+70	17 174
2c_80	+130	14 275	4d_70	0	17 157
1c_41	−260	14 245	4_66	+50	17 118
2b_79	+150	14 244	2_58	−30	17 111
2c_68	+10	14 211	3d_48	−220	17 094

Notes. The time to peak ram pressure is Δt_peak = ((N − 1) × 10)−t_peak Myr, where N is the number of the timestep (last number of the model names). Models Na: without diffuse ISM component. Models Nnewa: with diffuse ISM component. The different regions (downturn, tail) are defined in Fig. 3.

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