  We analyze the role played by vector-isovector meson interaction in dense
matter present in the interior of neutron stars in the light of new
measurements made during the double neutron-star merger GW170817. These concern
measurements of tidal deformability from gravitational waves and
electromagnetic observations. Our study includes three different equations of
state that contain different physical assumptions and matter compositions,
namely the NL3 family, MBF, and CMF models. Other related quantities/relations
analyzed are the neutron matter pressure, symmetry energy slope, stellar masses
and radii, and Urca process threshold for stellar cooling.
