Lifetime of merger features of equal-mass disk mergers

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Volume 566 (June 2014)

A&A, 566 (2014) A97

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Table 3

Characteristic times and merger-feature time to final coalescence time ratio.

Simulation	t_FP (Gyr)^a	t_MS (Gyr)^b	t_FC (Gyr)^c	t_MF,25 (Gyr)^d	t_MF,28 (Gyr)^e	t_MF,25/t_FC^f	t_MF,28/t_FC^g

Equal-mass mergers in isolated environment
SbSb0p	0.41	0.71	1.07	2.43 ± 0.34	6.65 ± 0.66	2.27 ± 0.32	6.22 ± 0.62
SbSb45p	0.41	0.65	1.07	2.31 ± 0.15	7.52 ± 0.74	2.16 ± 0.14	7.03 ± 0.69
SbSb90p	0.41	0.76	1.30	3.37 ± 0.15	5.70 ± 0.45	2.59 ± 0.11	4.38 ± 0.34
SbSb135p	0.41	0.60	1.13	2.44 ± 0.12	6.13 ± 0.84	2.16 ± 0.10	5.43 ± 0.84
SbSb180p	0.41	0.65	1.03	2.10 ± 0.24	5.41 ± 0.42	2.04 ± 0.24	5.25 ± 0.41
SaSb45p	0.41	0.67	1.09	2.40 ± 0.33	5.63 ± 0.65	2.20 ± 0.30	5.17 ± 0.59
SaSb90p	0.41	0.90	1.41	2.59 ± 0.22	4.82 ± 0.25	1.83 ± 0.16	3.42 ± 0.18
SaSb135p	0.41	0.63	1.08	2.26 ± 0.20	4.99 ± 0.24	2.09 ± 0.19	4.62 ± 0.22
SbSb45r	0.38	0.51	0.73	2.25 ± 0.26	7.01 ± 0.26	3.08 ± 0.35	9.60 ± 0.35
SbSb45p+	0.43	1.00	1.93	3.04 ± 0.18	6.69 ± 0.32	1.58 ± 0.09	3.47 ± 0.17
SbSb45e	0.49	0.61	0.84	2.68 ± 0.32	> 8.50 ^h	3.19 ± 0.38	> 10.12
SbSb45h	0.35	0.80	1.57	2.99 ± 0.20	5.60 ± 0.47	1.90 ± 0.13	3.57 ± 0.30

Mean	0.41± 0.03	0.71 ± 0.14	1.19 ± 0.33	2.57 ± 0.82	6.22 ± 1.73	2.16 ± 0.80	5.24 ± 1.46

Unequal-mass mergers in isolated environment
SbSb₃45h	0.44	1.11	2.13	4.59 ± 0.17	7.26 ± 0.66	2.15 ± 0.08	3.41 ± 0.31
SbSb₆45h	0.47	1.48	3.75	5.80 ± 0.14	8.30 ± 0.39	1.55 ± 0.04	2.21 ± 0.11
SbSb₁₀45h	0.48	2.8	12.9	−	−	−	−

Meanⁱ	0.46± 0.02	1.30 ± 0.26	2.94 ± 1.15	5.19 ± 0.44	7.78 ± 0.77	1.77 ± 0.15	2.65 ± 0.26

Merger in a cluster potential
SbSb45hC	0.35	0.80	1.57	2.81 ± 0.17	4.02 ± 0.17	1.79 ± 0.11	2.56 ± 0.04

Notes.

^(a)

First passage time.

^(b)

Maximum separation time.

^(c)

Final coalescence time.

^(d)

Merger-feature time based on μ_r,limit = 25 mag arcsec^-2.

^(e)

Merger-feature time based on μ_r,limit = 28 mag arcsec^-2.

^(f)

Ratio between merger-feature time to final coalescence time based on μ_r,limit = 25 mag arcsec^-2.

^(g)

Ratio between merger-feature time to final coalescence time timescales based on μ_r,limit = 28 mag arcsec^-2.

^(h)

Disturbed structures are clearly visible until the end of simulation (8.5 Gyr).

⁽ⁱ⁾

In this case, we consider only SbSb₃45h and SbSb₆45h mergers.

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