SIMBAD references

An advanced approach to the kinematic distance method is developed. The method is applicable to second- and third-quadrant Galactic objects with known velocities. It is based on fitting a model of the density and velocity features in an isothermal H I disk to observed H I data. The velocity field of the gas is modeled with a power law for basic circular rotation, underlying noncircular motions from a two-armed density wave pattern. With a reasonable number of adjustable parameters and constraints the model reproduces observations toward many Galactic objects, and accurate distances are found from the modeled velocity field. High-resolution H I spectral line data from the Canadian Galactic Plane Survey (CGPS; Taylor et al.) are used to discriminate clouds from the intercloud medium (the ``stratum'') for which the model is intended. The ability of the model to reproduce these data is demonstrated in one- [T_b(v)] and two- [T_b(l, v)] dimensional fits. Distances to 22 H II regions and SNRs calculated by the fitted velocity field compare extremely well with other kinematically independent distances.