The fraction of high velocity dispersion H I in the Galaxy
S. R. Kulkarni, M. Fich;
ApJ, 1985, 289, 792

ABSTRACT:The fraction of neutral hydrogen clouds which make up the high-velocity dispersion H I in the Galaxy is estimated. Observed H I emission profiles are compared with synthetic profiles to obtain a firm upper limit to the fraction of high-dispersion H I for the inner Galaxy, at the solar circle, and beyond the solar system. The difficulties in using H II regions for this kind of analysis are discussed, and alternative explanations for the observations of high-velocity dispersion H I are considered. The effect of fast H I on the energy balance within the interstellar medium is examined.
KEYWORDS: absorption spectra, interstellar gas, milky way galaxy, radio sources (astronomy), cosmic rays, h ii regions, halos, ionized gases, kinetic energy
PERSOKEY:21 cm, h_i, milky way, ,
CODE: kulkarni85