We present an extended set of model atmospheres and emergent spectra of X-ray bursting neutron stars in low mass X-ray binaries .
Compton scattering is taken into account .
The models were computed in LTE approximation for six different chemical compositions : pure hydrogen and pure helium atmospheres , and atmospheres with a solar mix of hydrogen and helium and various heavy elements abundances ; Z = 1 , 0.3 , 0.1 , and 0.01 Z _ { \odot } , for three values of gravity , \log g =14.0 , 14.3 , and 14.6 and for 20 values of relative luminosity l = L / L _ { Edd } in the range 0.001 - 0.98 .
The emergent spectra of all models are fitted by diluted blackbody spectra in the observed RXTE /PCA band 3 - 20 keV and the corresponding values of color correction factors f _ { c } are presented .
We also show how to use these dependencies to estimate the neutron star ’ s basic parameters .