Dwek, Eli and Cherchneff, Isabelle. (2010) The Origin of Dust in High-Redshift Quasars: The Case of J1148+5251. In: The first stars and galaxies: Challenges for the next decade, 1294.
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Abstract
Two distinct scenarios have been proposed to explain the origin of dust observed in the high-redshift (z = 6.4) quasar J1148+5251. The first scenario suggests that because of the relatively young age of the universe (~890 Myr), only massive stars could have produced the large amount of dust observed in this object. The second scenario assumes a significantly older galactic age, so that most of the dust could have formed in lower-mass AGB stars that would have sufficient time to evolve off the main sequence. In this contribution we offer a critical analysis of both scenarios, and briefly discuss alternative suggestions for the origin of dust in this object.
| Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik |
|---|---|
| UniBasel Contributors: | Cherchneff-Parrinello, Isabelle |
| Item Type: | Conference or Workshop Item, refereed |
| Conference or workshop item Subtype: | Conference Paper |
| Publisher: | AIP Publishing |
| Series Name: | AIP Conference Proceedings |
| Issue Number: | 142 |
| ISSN: | 0094-243X |
| e-ISSN: | 1551-7616 |
| Note: | Publication type according to Uni Basel Research Database: Conference paper |
| Identification Number: |
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| Last Modified: | 15 Mar 2017 10:19 |
| Deposited On: | 15 Mar 2017 10:19 |
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