A study of interacting galaxies from the Arp-Madore catalog - Triggering of star formation and nuclear activity

Open Access

Table 3.

Classification of the galaxies in the INT and CTR samples using four distinct combinations of diagnostic diagrams.

Properties	% INT (N gal.)	% CTR (N gal.)	% INT/% CTR
4/5 DGs ^(a)
INC	53 (31)	76 (34)	0.7
RG	0 (0)	2 (1)	0.0
SF	34 (20)	16 (7)	2.18
AGN	14 (8)	7 (3)	2.03
3/5 DGs ^(b)
INC	22 (13)	49 (22)	0.45
RG	2 (1)	7 (3)	0.25
SF	54 (32)	38 (17)	1.44
AGN	22 (13)	7 (3)	3.31
[NII]+[SII]+WHAN ^(c)
INC	58 (34)	73 (33)	0.79
RG	2 (1)	4 (2)	0.38
SF	25 (15)	18 (8)	1.43
AGN	15 (9)	4 (2)	3.43
[NII]+WHAN ^(d)
INC	31 (18)	51 (23)	0.6
RG	2 (1)	9 (4)	0.19
SF	27 (16)	20 (9)	1.36
AGN	41 (24)	20 (9)	2.03

Notes. The INT and CTR columns include the percentage and the number of galaxies between parentheses. All the classifications require agreement in:

^(a)

at least four of the five diagnostic diagrams,

^(b)

at least three of the five diagnostic diagrams,

^(c)

the [NII], [SII], and WHAN diagrams,

^(d)

the [NII] BPT and WHAN diagrams.

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