Effects of molecular clouds on the Rotation curves of galaxies and profile of dark matter halos

The presence of dark baryons under the form of cold molecular clouds in galactic disks is investigated using the galactic rotation curves (RCs) of SPARC sample. We _t the RCs in the context of CDM and MOND. For the gaseous components, we assume that the measured mass in atomic form increases by a factor of c to include the molecular component in the mass budget of galaxies. In the presence of dark baryons (c 1) we have almost better fits for galaxies. Also, we find that the mean value of the scale-factor is near c = 3:00 _ 3:0. The majority of galaxies in the sample (70%) could contain some dark baryons because the scale factor (c) is in the range of 1 c 10, while a few percent (30%) of galaxies have a scale factor of 1, equivalent to a model without dark baryons. Our results present the existence of different scaling relations between structural parameters of ISO dark matter (DM) halos. We apply our data to radial acceleration relation (RAR) to study the effects of adding dark baryons to the rotation curves on the RAR