Gas dynamics in tidal dwarf galaxies: Disc formation at z = 0

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Volume 584 (December 2015)

A&A, 584 (2015) A113

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Table 7

Properties of the TDGs from 3D kinematical models.

Object	RA	Dec	V_sys	PA	i	R_out	V_rot	σ_{H I}	t_orb	t_merg/t_orb
	(J2000)	(J2000)	(km s^-1)	(°)	(°)	(kpc)	(km s^-1)	(km s^-1)	(Gyr)

NGC 5291N	13 47 20.3	−30 20 54	4150	0	55	4.8±1.2	40±9	20±2^*	0.7±0.2	0.5
NGC 5291S	13 47 22.7	−30 27 40	4660	5	65	7.2±1.2	20±6	20±2^*	2.2±0.7	0.2
NGC 5291SW	13 47 17.1	−30 28 21	4688	50	60	4.8±1.2	22±7	12±2	1.3±0.4	0.3
NGC 7252E	22 20 56.0	−24 41 10	4815	100	80	4.5±1.9	11±5	10±2	2.5±1.6	0.3
NGC 7252NW	22 20 33.7	−24 37 24	4678	125	60	7.7±1.9	16±6	10±2	3.0±1.2	0.2
VCC 2062	12 48 00.8	+10 58 15	1152	55	45	2.6±0.6	13±7	7±1	1.2±0.5	0.4−0.8

Notes.

^(*)

These high values of σ_{H I} may be either physical or due to unresolved non-circular motions within the H I beam.

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