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