Large-scale Galactic dust morphology and physical conditions from IRAS observations
T. J. Sodroski, E. Dwek, M. G. Hauser, F. J. Kerr;
ApJ, 1987, 322, 101
ABSTRACT:In this paper, the zodiacal component is subtracted from the 60 and 100 micron Galactic plane
emission by applying an empirical model derived from IRAS data in regions of the
sky not dominated by the Galaxy.
The corrected observations are used to
derive the large-scale physical conditions such as temperature, optical
depth, and total FIR brightness of the dust residing in the Galactic
disk.
(C-12)O, H I, and 5 GHz radio continuum observations are also used to compare the
large-scale properties of the gas and dust distributions in the Galaxy.
Possible
scenarios to explain the findings are suggested.
KEYWORDS: astronomical spectroscopy, galactic structure, infrared spectra, interstellar matter, milky way galaxy, spaceborne astronomy, far infrared radiation, infrared astronomy satellite, optical thickness, temperature distribution, zodiacal light
PERSOKEY:fir, iras, h_i, h+, h2, milky way, ,
CODE: sodroski87