The percentage of stellar light re‐radiated by dust in late‐type Virgo Cluster galaxies
Identifieur interne : 000408 ( Main/Exploration ); précédent : 000407; suivant : 000409The percentage of stellar light re‐radiated by dust in late‐type Virgo Cluster galaxies
Auteurs : Cristina C. Popescu [États-Unis, Roumanie] ; Richard J. Tuffs [Allemagne]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2002-09.
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Abstract
We show that the mean percentage of stellar light re‐radiated by dust is ∼30 per cent for the Virgo Cluster late‐spirals measured with ISOPHOT by Tuffs et al. A strong dependence of this ratio with morphological type was found, ranging from typical values of ∼15 per cent for early spirals to up to ∼50 per cent for some late spirals. The extreme BCDs can have even higher percentages of their bolometric output re‐radiated in the thermal infrared. Luminosity correction factors for the cold dust component are given for general use in converting far‐infrared (FIR) luminosities derived from IRAS.
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DOI: 10.1046/j.1365-8711.2002.05881.x
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Popescu</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Str., Pasadena, 91101 CA</wicri:regionArea><wicri:noRegion>91101 CA</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>IPAC (Caltech/JPL), 770 S. Wilson Avenue, Pasadena, California 91125</wicri:regionArea><wicri:noRegion>California 91125</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Roumanie</country><wicri:regionArea>Research Associate, The Astronomical Institute of the Romanian Academy, Str. Cu?itul de Argint 5, Bucharest</wicri:regionArea><wicri:noRegion>Bucharest</wicri:noRegion></affiliation></author><author><name sortKey="Tuffs, Richard J" sort="Tuffs, Richard J" uniqKey="Tuffs R" first="Richard J." last="Tuffs">Richard J. 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Telephone (0131) 226 7232 Fax (0131) 226 3803</pubPlace><date type="published" when="2002-09">2002-09</date><biblScope unit="volume">335</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="L41">L41</biblScope><biblScope unit="page" to="L44">L44</biblScope></imprint><idno type="ISSN">0035-8711</idno></series><idno type="istex">3DCCA61B7C1BC405FA8AEE7FE2E9E8E98ABB8209</idno><idno type="DOI">10.1046/j.1365-8711.2002.05881.x</idno><idno type="ArticleID">MNR5881</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>galaxies: clusters: individual: Virgo Cluster</term><term>galaxies: fundamental parameters</term><term>galaxies: photometry</term><term>galaxies: spiral</term><term>galaxies: statistics</term><term>infrared: galaxies</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We show that the mean percentage of stellar light re‐radiated by dust is ∼30 per cent for the Virgo Cluster late‐spirals measured with ISOPHOT by Tuffs et al. A strong dependence of this ratio with morphological type was found, ranging from typical values of ∼15 per cent for early spirals to up to ∼50 per cent for some late spirals. The extreme BCDs can have even higher percentages of their bolometric output re‐radiated in the thermal infrared. Luminosity correction factors for the cold dust component are given for general use in converting far‐infrared (FIR) luminosities derived from IRAS.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Roumanie</li><li>États-Unis</li></country><region><li>Bade-Wurtemberg</li><li>District de Karlsruhe</li></region><settlement><li>Heidelberg</li></settlement></list><tree><country name="États-Unis"><noRegion><name sortKey="Popescu, Cristina C" sort="Popescu, Cristina C" uniqKey="Popescu C" first="Cristina C." last="Popescu">Cristina C. 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