Large-scale Galactic dust morphology and physical conditions from IRAS observations

Journal Article · Sun Nov 01 04:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165707· OSTI ID:5424717

Sodroski, T J; Dwek, E; Hauser, M G; Kerr, F J

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. 48 references.

• Research Organization: NASA, Goddard Space Flight Center, Greenbelt, MD (USA); Maryland Univ., College Park (USA)
• OSTI ID: 5424717
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 322; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC DUST
COSMIC GASES
COSMIC RADIO SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FLUIDS
GALAXIES
GASES
H1 REGIONS
INFRARED RADIATION
INFRARED SPECTRA
INTERSTELLAR SPACE
MILKY WAY
MORPHOLOGY
RADIATIONS
RADIOWAVE RADIATION
SPACE
SPECTRA
TEMPERATURE DISTRIBUTION
ZODIACAL LIGHT