The components of mid- and far-infrared emission from S0 and early-type shell galaxies

The components of mid- and far-infrared emission from S0 and early-type shell galaxies

The IRAS database has been used to study detections of about 150 early-type elliptical and S0 galaxies exhibiting a shell structure. No strong evidence for the expected enhancement of either star formation rates or heating of the interstellar medium is found. It is suggested that for some of the sam...

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Veröffentlicht in:Astron. J.; (United States) 1989-02, Vol.97, p.363-374
Hauptverfasser: Thronson, Harley A., Jr, Bally, John, Hacking, Perry
Format: Artikel
Sprache:eng
Schlagworte:
640105 - Astrophysics & Cosmology- Galaxies
Astrophysics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONFIGURATION
COSMIC DUST
COSMIC GASES
DUSTS
ELECTROMAGNETIC RADIATION
ELLIPTICAL CONFIGURATION
EMISSION SPECTRA
FAR INFRARED RADIATION
FLUIDS
FLUX DENSITY
GALAXIES
GALAXY NUCLEI
GASES
HEATING
INFRARED RADIATION
INTERSTELLAR SPACE
MORPHOLOGY
RADIATIONS
SPACE
SPECTRA
STAR EVOLUTION
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Zusammenfassung:The IRAS database has been used to study detections of about 150 early-type elliptical and S0 galaxies exhibiting a shell structure. No strong evidence for the expected enhancement of either star formation rates or heating of the interstellar medium is found. It is suggested that for some of the sample galaxies either a contribution from warm dust surrounding evolved stars or emission from an active nucleus may be significant.
ISSN:0004-6256
DOI:10.1086/114987