The heating of dust in starburst galaxies : the contribution of the nonionizing radiation

Detalhes bibliográficos
Autor(a) principal: Calzetti, Daniela
Data de Publicação: 1995
Outros Autores: Bohlin, Ralph C., Kinney, Anne Louise, Storchi-Bergmann, Thaisa, Heckman, Timothy M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/108776
Resumo: The IUE UV and optical spectra and the far-infrared (FIR) IRAS flux densities of a sample of starburst and blue compact galaxies are used to investigate the relationship between dust obscuration and dust emission. The amount of dust obscuration at UV wavelengths correlates with the FIR-to-blue ratio; and an analysis of the correlation indicates that not only the ionizing but also the nonionizing radiation contribute to the FIR emission. The amount of UV and optical energy lost to dust obscuration accounts for most of the cool dust FIR emission and for about 70% of the warm dust FIR emission The remaining 30% of the warm dust FIR flux is probably due to dust emission from regions of star formation which are embedded in opaque giant molecular clouds and do not contribute to the integrated UV and optical spectrum. The use of the FIR emission as an indicator of high-mass star formation rate in star-forming galaxies can be problematic, since the contribution to the FIR fl.ux from cool dust emission heated by relatively old stars is nonnegligible (~30%).
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spelling Calzetti, DanielaBohlin, Ralph C.Kinney, Anne LouiseStorchi-Bergmann, ThaisaHeckman, Timothy M.2015-01-07T02:10:40Z19950004-637Xhttp://hdl.handle.net/10183/108776000190603The IUE UV and optical spectra and the far-infrared (FIR) IRAS flux densities of a sample of starburst and blue compact galaxies are used to investigate the relationship between dust obscuration and dust emission. The amount of dust obscuration at UV wavelengths correlates with the FIR-to-blue ratio; and an analysis of the correlation indicates that not only the ionizing but also the nonionizing radiation contribute to the FIR emission. The amount of UV and optical energy lost to dust obscuration accounts for most of the cool dust FIR emission and for about 70% of the warm dust FIR emission The remaining 30% of the warm dust FIR flux is probably due to dust emission from regions of star formation which are embedded in opaque giant molecular clouds and do not contribute to the integrated UV and optical spectrum. The use of the FIR emission as an indicator of high-mass star formation rate in star-forming galaxies can be problematic, since the contribution to the FIR fl.ux from cool dust emission heated by relatively old stars is nonnegligible (~30%).application/pdfengThe astrophysical journal. Chicago. Vol. 443, no. 1, pt. 1 (Apr. 1995), p. 136-151Galáxias ativasPoeira cosmicaMateria interestelarEspectros astronômicosDust: extinctionGalaxies: ISMGalaxies: starburstInfrared: galaxiesUltraviolet: galaxiesThe heating of dust in starburst galaxies : the contribution of the nonionizing radiationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000190603.pdf000190603.pdfTexto completo (inglês)application/pdf343546http://www.lume.ufrgs.br/bitstream/10183/108776/1/000190603.pdfd493cf9d4268992abb3888405ed47ddaMD51TEXT000190603.pdf.txt000190603.pdf.txtExtracted Texttext/plain352http://www.lume.ufrgs.br/bitstream/10183/108776/2/000190603.pdf.txt237594f65efb1b1d0f8b2b4fe9f0c5f9MD52THUMBNAIL000190603.pdf.jpg000190603.pdf.jpgGenerated Thumbnailimage/jpeg2019http://www.lume.ufrgs.br/bitstream/10183/108776/3/000190603.pdf.jpg29735016e3a01f33271717e83d1544c5MD5310183/1087762018-10-23 08:34:35.99oai:www.lume.ufrgs.br:10183/108776Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-23T11:34:35Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
title The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
spellingShingle The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
Calzetti, Daniela
Galáxias ativas
Poeira cosmica
Materia interestelar
Espectros astronômicos
Dust: extinction
Galaxies: ISM
Galaxies: starburst
Infrared: galaxies
Ultraviolet: galaxies
title_short The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
title_full The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
title_fullStr The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
title_full_unstemmed The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
title_sort The heating of dust in starburst galaxies : the contribution of the nonionizing radiation
author Calzetti, Daniela
author_facet Calzetti, Daniela
Bohlin, Ralph C.
Kinney, Anne Louise
Storchi-Bergmann, Thaisa
Heckman, Timothy M.
author_role author
author2 Bohlin, Ralph C.
Kinney, Anne Louise
Storchi-Bergmann, Thaisa
Heckman, Timothy M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Calzetti, Daniela
Bohlin, Ralph C.
Kinney, Anne Louise
Storchi-Bergmann, Thaisa
Heckman, Timothy M.
dc.subject.por.fl_str_mv Galáxias ativas
Poeira cosmica
Materia interestelar
Espectros astronômicos
topic Galáxias ativas
Poeira cosmica
Materia interestelar
Espectros astronômicos
Dust: extinction
Galaxies: ISM
Galaxies: starburst
Infrared: galaxies
Ultraviolet: galaxies
dc.subject.eng.fl_str_mv Dust: extinction
Galaxies: ISM
Galaxies: starburst
Infrared: galaxies
Ultraviolet: galaxies
description The IUE UV and optical spectra and the far-infrared (FIR) IRAS flux densities of a sample of starburst and blue compact galaxies are used to investigate the relationship between dust obscuration and dust emission. The amount of dust obscuration at UV wavelengths correlates with the FIR-to-blue ratio; and an analysis of the correlation indicates that not only the ionizing but also the nonionizing radiation contribute to the FIR emission. The amount of UV and optical energy lost to dust obscuration accounts for most of the cool dust FIR emission and for about 70% of the warm dust FIR emission The remaining 30% of the warm dust FIR flux is probably due to dust emission from regions of star formation which are embedded in opaque giant molecular clouds and do not contribute to the integrated UV and optical spectrum. The use of the FIR emission as an indicator of high-mass star formation rate in star-forming galaxies can be problematic, since the contribution to the FIR fl.ux from cool dust emission heated by relatively old stars is nonnegligible (~30%).
publishDate 1995
dc.date.issued.fl_str_mv 1995
dc.date.accessioned.fl_str_mv 2015-01-07T02:10:40Z
dc.type.driver.fl_str_mv Estrangeiro
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format article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/108776
dc.identifier.issn.pt_BR.fl_str_mv 0004-637X
dc.identifier.nrb.pt_BR.fl_str_mv 000190603
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url http://hdl.handle.net/10183/108776
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv The astrophysical journal. Chicago. Vol. 443, no. 1, pt. 1 (Apr. 1995), p. 136-151
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