The interstellar medium of the hot-spot galaxy NGC 2903

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170173· OSTI ID:5225473

Jackson, J M; Eckart, A; Cameron, M; Wild, W; Ho, P T.P. ^[1]

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1. Boston Univ., MA (USA) Max-Planck-Institut fuer Physik und Astrophysik, Garching (West Germany) Max-Planck Institut fuer Physik und Astrophysik, Garching (West Germany) Harvard College Observatory, Cambridge, MA (USA)

The interstellar medium of a hot-spot galaxy NGC 2903 was studied by mapping NGC 2903 in 21-cm radio continuum, H-alpha, and CO J = 2-1 and 1-0 emissions. The dust distribution was studied using 50-micron and 100-micron IRAS Chopped Photometric Channel images of NGC 2903. The CO data were found to be consistent with emission from giant molecular clouds with properties typical of Milky Way clouds (i.e., with large optical depths, excitation temperatures near 10 K, and sizes about 100 pc). The global FIR/CO luminosity ratio is typical of that for normal spirals. The local FIR/CO ratio varies considerably. 77 refs.

• OSTI ID: 5225473
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 375; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CONFIGURATION
COSMIC DUST
COSMIC GASES
COSMIC RADIO SOURCES
DISTRIBUTION
DUSTS
ELECTROMAGNETIC RADIATION
FLUIDS
GALAXIES
GASES
INFRARED RADIATION
INTERSTELLAR SPACE
LUMINOSITY
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHOTOMETRY
PHYSICAL PROPERTIES
RADIATIONS
RADIO GALAXIES
SPACE
SPATIAL DISTRIBUTION
SPIRAL CONFIGURATION