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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1644
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dc.contributor.authorVenkatesan, Aparna-
dc.contributor.authorNath, Biman B.-
dc.contributor.authorShull, J Michael-
dc.date.accessioned2007-01-02T11:40:46Z-
dc.date.available2007-01-02T11:40:46Z-
dc.date.issued2006-03-20-
dc.identifier.citationAstrophysical Journal, 2006, Vol.640, p 31-40en
dc.identifier.issn0004-637X-
dc.identifier.issn1538-4357 (online)-
dc.identifier.urihttp://hdl.handle.net/2289/1644-
dc.descriptionRestricted Access. Articles older than 2 years are open to all at the journal site (alternative location). Open access version available at arXiv.orgen
dc.description.abstractWe investigate the radiative transport of dust in primordial galaxies in the presence of the UV radiation field from the first metal-free stars. We find that dust created in the first supernova (SN) explosions can be driven through the interior of the SN remnant to accumulate in the SN shells, where second-generation stars may form from compressed cooling gas. This scenario requires metal-free stars to form continuously over timescales of up to 10 Myr, consistent with recent estimates. Silicate and graphite grains, as well as iron-bearing magnetites, are transported to the shells for reasonable parameter assumptions, but their relative yields from primordial SNe is an important factor in the resulting abundance ratios. We compare the results of segregated grain transport with the current nucleosynthetic data on extremely metal-poor Galactic halo stars. Fossil signatures of this process may already have been detected in those iron-poor stars with enhanced carbon and silicate elements such as magnesium, silicon and oxygen. We discuss the implications of our results for the transition from first- to second-generation star formation in primordial galaxies, and the role played by the radiative transport of dust in this process.en
dc.format.extent228972 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherThe University of Chicago Press for the American Astronomical Societyen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?2006ApJ...640...31Ven
dc.relation.urihttp://arxiv.org/abs/astro-ph/0508163en
dc.relation.urihttp://dx.doi.org/10.1086/500078en
dc.rights(2006) by the American Astronomical Society.en
dc.subjectCosmology: Theoryen
dc.subjectISM: Dusten
dc.subjectExtinctionen
dc.subjectGalaxies: High-Redshiften
dc.subjectStars: Abundancesen
dc.subjectStars: Population IIen
dc.subjectISM: Supernova Remnantsen
dc.titleThe radiative transport of dust in primordial galaxies and second-generation star formationen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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