GHASP: an H$\alpha$ kinematical survey of spiral galaxies -- XIII.
  Distribution of luminous and dark matter in spiral and irregular nearby
  galaxies using H$\alpha$ and HI rotation curves and WISE photometry
  We present the mass models of 31 spiral and irregular nearby galaxies
obtained using hybrid rotation curves (RCs) combining high resolution GHASP
Fabry-Perot H$\alpha$ RCs and extended WHISP HI ones together with 3.4 $\mu$m
WISE photometry. The aim is to compare the dark matter (DM) halo properties
within the optical radius using only H$\alpha$ RCs with the effect of including
and excluding the mass contribution of the neutral gas component, and when
using HI or hybrid RCs. Pseudo-isothermal (ISO) core and Navarro-Frenk-White
(NFW) cuspy DM halo profiles are used with various fiducial fitting procedures.
Mass models using H$\alpha$ RCs including or excluding the HI gas component
provide compatible disc M/L. The correlations between DM halo and baryon
parameters do not strongly depend on the RC. Clearly, the differences between
the fitting procedures are larger than between the different datasets. Hybrid
and HI RCs lead to higher M/L values for both ISO and NFW best fit models but
lower central densities for ISO halos and higher concentration for NFW halos
than when using H$\alpha$ RCs only. The agreement with the mass model
parameters deduced using hybrid RCs, considered as a reference, is better for
HI than for H$\alpha$ RCs. ISO density profiles better fit the RCs than the NFW
ones, especially when using H$\alpha$ or hybrid RCs. Halo masses at the optical
radius determined using the various datasets are compatible even if they tend
to be overestimated with H$\alpha$ RCs. Hybrid RCs are thus ideal to study the
mass distribution within the optical radius.
