Table 3: Comparison of the main properties of Isolated (Is) and Perturbed (Pt) galaxies. The statistical parameter z from the U-test is given in the third column. In the last three columns we give the median values for the three morphological bins defined in the text. The first row contains the results for the morphological types, the numbers in parentheses corresponding to the number of galaxies used in the comparison. The second row gives the fraction of galaxies with bars. The other rows correspond to the other properties we considered.
Status z-value S0 Early Sp Late Sp

Type
Is (196) 2.79 21.4% 36.7% 41.8%

Pt (129) 31.0% 43.4% 25.6%

Bars Is (64) - 15.7% 34.9% 38.2%

Pt (66) 39.2% 71.1% 41.2%

$M_{\rm B}$ Is (203) 4.74 -17.88 (42) -19.55 (72) -19.27 (89)

Pt (130) -19.60 (40) -19.90 (56) -19.73 (34)

log D₂₅ Is (203) 6.05 0.90 (42) 1.21 (72) 1.20 (89)

Pt (130) 1.28 (40) 1.38 (56) 1.35 (34)

(U-B) Is (45) 3.84 0.22 (11) 0.03 (19) -0.12 (15)

Pt (67) 0.40 (26) 0.15 (27) -0.07 (14)

(B-V) Is (58) 3.69 0.76 (11) 0.66 (19) 0.51 (28)

Pt (78) 0.85 (29) 0.68 (31) 0.53 (18)

$\mu_{25}$ Is (203) 2.73 23.29 (42) 23.04 (72) 23.39 (89)

Pt (130) 23.50 (40) 23.38 (56) 23.38 (34)

log $v_{\rm m}$
Is (149) 3.99 1.87 (13) 2.20 (55) 2.09 (81)

Pt (94) 2.21 (15) 2.31 (48) 2.13 (31)

log $\sigma$ Is (23) 3.15 2.06 (10) 2.23 (6) 1.99 (7)

Pt (46) 2.25 (26) 2.18 (16) 2.05 (4)

W₂₀ Is (139) 5.09 164 (13) 290 (53) 240 (73)

Pt (87) 327 (14) 386 (45) 264 (28)

$M_{\rm FIR} - M_{\rm B}$ Is (104) 3.02 -0.80 (11) -0.80 (45) -0.31 (48)

Pt (44) -1.06 (1) -0.34 (27) -0.25 (16)

log ( $M_{\rm HI}/L_{\rm B}$ ) Is (151) 0.91 -0.74 (14) -0.67 (55) -0.46 (82)

Pt (93) -1.17 (15) -0.66 (47) -0.38 (31)

log ( $M_{\rm mol}/L_{\rm B}$ ) Is (21) 2.61 -0.89 (2) -0.64 (5) -1.15 (14)

Pt (20) - -0.62 (13) -0.62 (7)

**Table 3:** Comparison of the main properties of Isolated (Is) and Perturbed (Pt) galaxies. The statistical parameter z from the U-test is given in the third column. In the last three columns we give the median values for the three morphological bins defined in the text. The first row contains the results for the morphological types, the numbers in parentheses corresponding to the number of galaxies used in the comparison. The second row gives the fraction of galaxies with bars. The other rows correspond to the other properties we considered.
	Status	z-value	S0	Early Sp	Late Sp
Type	Is (196)	2.79	21.4%	36.7%	41.8%
	Pt (129)		31.0%	43.4%	25.6%
Bars	Is (64)	-	15.7%	34.9%	38.2%
	Pt (66)		39.2%	71.1%	41.2%
$M_{\rm B}$	Is (203)	4.74	-17.88 (42)	-19.55 (72)	-19.27 (89)
	Pt (130)		-19.60 (40)	-19.90 (56)	-19.73 (34)
log D₂₅	Is (203)	6.05	0.90 (42)	1.21 (72)	1.20 (89)
	Pt (130)		1.28 (40)	1.38 (56)	1.35 (34)
(U-B)	Is (45)	3.84	0.22 (11)	0.03 (19)	-0.12 (15)
	Pt (67)		0.40 (26)	0.15 (27)	-0.07 (14)
(B-V)	Is (58)	3.69	0.76 (11)	0.66 (19)	0.51 (28)
	Pt (78)		0.85 (29)	0.68 (31)	0.53 (18)
$\mu_{25}$	Is (203)	2.73	23.29 (42)	23.04 (72)	23.39 (89)
	Pt (130)		23.50 (40)	23.38 (56)	23.38 (34)
log $v_{\rm m}$	Is (149)	3.99	1.87 (13)	2.20 (55)	2.09 (81)
	Pt (94)		2.21 (15)	2.31 (48)	2.13 (31)
log $\sigma$	Is (23)	3.15	2.06 (10)	2.23 (6)	1.99 (7)
	Pt (46)		2.25 (26)	2.18 (16)	2.05 (4)
W₂₀	Is (139)	5.09	164 (13)	290 (53)	240 (73)
	Pt (87)		327 (14)	386 (45)	264 (28)
$M_{\rm FIR} - M_{\rm B}$	Is (104)	3.02	-0.80 (11)	-0.80 (45)	-0.31 (48)
	Pt (44)		-1.06 (1)	-0.34 (27)	-0.25 (16)
log ( $M_{\rm HI}/L_{\rm B}$ )	Is (151)	0.91	-0.74 (14)	-0.67 (55)	-0.46 (82)
	Pt (93)		-1.17 (15)	-0.66 (47)	-0.38 (31)
log ( $M_{\rm mol}/L_{\rm B}$ )	Is (21)	2.61	-0.89 (2)	-0.64 (5)	-1.15 (14)
	Pt (20)		-	-0.62 (13)	-0.62 (7)

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