Chemical abundances of the PRGs UGC 7576 and UGC 9796 - I. Testing the formation scenario

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Table 1

Global properties of UGC 7576 and UGC 9796 compared to those observed for NGC 4650A.

Parameter	UGC 7576	UGC 9796	NGC 4650A

RA (J2000)	12^h27^m41.8^s	15^h15^m56.3^s	12^h 44^m 49.0^s
Dec (J2000)	+28^d41^m53^s	+43^d10^m00^s	–40^d 42^m 52^s
Helio. radial velocity	7022 km s^-1	5406 km s^-1	2880 km s^-1
Redshift	0.02342	0.01832	0.009607
Distance	94 Mpc	72 Mpc	38 Mpc
Central galaxy
M_B	–19.15	–17.93	–18.83
B − V	+0.84	+0.92	+0.78
V − R	+0.46	+0.55
Polar structure
M_B	–17.5	–17.0	–17.0
M(HI)(M_⊙)	2.7 × 10⁹	2.6 × 10⁹	8.0 × 10⁹^a
M(HI)/L_B	0.6	1.5	4
B − V	+0.70^b	+0.57^b	+0.26^c
μ_B	24.3	24.5	22.6
R₂₅	13.6	10.8	7.0
r_max	40″	60″	40″

References.

^(a)

Arnaboldi et al. (1997);

^(b)

Reshetnikov et al. (1994);

^(c)

Iodice et al. (2002).

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