Archivio istituzionale della ricerca della Scuola Normale Superiore
IRIS SNS è l'archivio istituzionale destinato a raccogliere, conservare e diffondere ad accesso aperto la produzione scientifica degli autori afferenti alla Scuola Normale Superiore.
EnglishX-shooter, with its characteristics of resolution, spectral coverage and efficiency, provides a unique opportunity to obtain spectra of the highest-redshift quasars (z ~ 6) that will allow us to carry out successful investigations on key cosmological issues, from the details of the re-ionization process, to the evolution of the first galaxies and AGNs. In this paper, we present the spectra of three z ~ 6 quasars: one obtained during the commissioning of X-shooter and two in the context of our ongoing GTO programme. Combining this sample with data in the literature, we update the value of the C IV cosmic mass density in the range 4.5 < z < 5, confirming the constant trend with redshift between 2.5 and 5.
| Titolo: | Optical-NIR spectra of quasars close to reionization (z ∼ 6) | |
| Autori: | ||
| Data di pubblicazione: | 2011 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/asna.201111545 | |
| Parole Chiave: | astro-ph.CO; astro-ph.CO | |
| Handle: | http://hdl.handle.net/11384/66008 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11384/66008
Copyright © 2022