Ta. Kuchar et Tm. Bania, KINEMATIC DISTANCES OF GALACTIC H-II-REGIONS FROM H-I ABSORPTION STUDIES, The Astrophysical journal, 436(1), 1994, pp. 117-124
A catalog of kinematic distances for a sample of first Galactic quadra
nt H II regions is presented. H I absorption spectra were obtained tow
ard 57 H II regions and were used to resolve the kinematic distance am
biguity. Combined with our previous study, the kinematic distances are
presented for a total of 70 H II regions, 45 of which are new determi
nations. Absorption was detected within similar to 10 km s(-1) of reco
mbination line velocity for 92% of the H II regions. The positions of
many of these sources coincide with giant molecular clouds and mark ri
dges of possible spiral arm segments within the solar circle.