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Table 6.

Mass models parameters for NGC 5257 and NGC 5258 from fits of the multi-wavelength rotation curve considering only points associated with circular motions.

Galaxy Type of Maximal (M/L)bulge (M/L)disc R0 ρ0 χ2
halo disc (I-band) (I-band) (kpc) (10−3M pc−3)
NGC 5257 pISO Yes 3.50 3.50 4.5 0.01 0.22
pISO No 1.75 0.50 2.6 0.40 0.12
NFW Yes 0.01 6.30 9.0 0.05 0.12
NFW No 0.50 0.50 16.8 0.04 0.19
NGC 5258 pISO Yes 3.20 3.10 5.8 0.06 0.45
pISO No 2.40 1.55 4.5 0.11 0.43
NFW Yes 4.30 3.70 45.0 0.71 0.70
NFW No 1.00 1.00 33.6 0.01 0.50

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