VLT-VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies - II. Evidence for shock ionization caused by tidal forces in the extra-nuclear regions of interacting and merging LIRGs

A. Monreal-Ibero; S. Arribas; L. Colina; J. Rodríguez-Zaurín; A. Alonso-Herrero; M. García-Marín

doi:10.1051/0004-6361/200913239

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Volume 517 (July 2010)

A&A, 517 (2010) A28

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Table 2:

Median, standard deviation, and number of data points for the distributions of the different groups and line ratios.
Group	$\log$ ([N II] $\lambda$ 6584/H $\alpha$ )			$\log$ ([S II] $\lambda \lambda$ 6717,6731/H $\alpha$ )			$\log$ ([O I] $\lambda$ 6300/H $\alpha$ )
	Median	Std Dev	N	Median	Std Dev	N	Median	Std Dev	N
All	-0.37	0.18	24 017	-0.49	0.16	12 564	-1.46	0.34	5733
Class 0	-0.37	0.18	10 605	-0.55	0.13	4932	-1.56	0.28	1953
Class 1	-0.38	0.17	6680	-0.49	0.18	3140	-1.43	0.33	1349
Class 2	-0.36	0.16	3992	-0.48	0.17	2628	-1.35	0.35	2023

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