Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24650
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Schmidt, K. B. | en_US |
dc.contributor.author | Treu, T. | en_US |
dc.contributor.author | Bradač, M. | en_US |
dc.contributor.author | Vulcani, Benedetta | en_US |
dc.contributor.author | Huang, K. -H. | en_US |
dc.contributor.author | Hoag, A. | en_US |
dc.contributor.author | Maseda, M. | en_US |
dc.contributor.author | Guaita, L. | en_US |
dc.contributor.author | PENTERICCI, Laura | en_US |
dc.contributor.author | Brammer, G. B. | en_US |
dc.contributor.author | Dijkstra, M. | en_US |
dc.contributor.author | Dressler, A. | en_US |
dc.contributor.author | FONTANA, Adriano | en_US |
dc.contributor.author | Henry, A. L. | en_US |
dc.contributor.author | Jones, T. A. | en_US |
dc.contributor.author | Mason, C. | en_US |
dc.contributor.author | Trenti, M. | en_US |
dc.contributor.author | Wang, X. | en_US |
dc.date.accessioned | 2020-05-08T13:55:35Z | - |
dc.date.available | 2020-05-08T13:55:35Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24650 | - |
dc.description.abstract | We present a census of Lyα emission at z≳ 7, utilizing deep near-infrared Hubble Space Telescope grism spectroscopy from the first six completed clusters of the Grism Lens-Amplified Survey from Space (GLASS). In 24/159 photometrically selected galaxies we detect emission lines consistent with Lyα in the GLASS spectra. Based on the distribution of signal-to-noise ratios and on simulations, we expect the completeness and the purity of the sample to be 40%-100% and 60%-90%, respectively. For the objects without detected emission lines we show that the observed (not corrected for lensing magnification) 1σ flux limits reach 5 × 10<SUP>-18</SUP> erg s<SUP>-1</SUP> cm<SUP>-2</SUP> per position angle over the full wavelength range of GLASS (0.8-1.7 μm). Based on the conditional probability of Lyα emission measured from the ground at z∼ 7, we would have expected 12-18 Lyα emitters. This is consistent with the number of detections, within the uncertainties, confirming the drop in Lyα emission with respect to z∼ 6. Deeper follow-up spectroscopy, here exemplified by Keck spectroscopy, is necessary to improve our estimates of completeness and purity and to confirm individual candidates as true Lyα emitters. These candidates include a promising source at z = 8.1. The spatial extent of Lyα in a deep stack of the most convincing Lyα emitters with < z> = 7.2 is consistent with that of the rest-frame UV continuum. Extended Lyα emission, if present, has a surface brightness below our detection limit, consistent with the properties of lower-redshift comparison samples. From the stack we estimate upper limits on rest-frame UV emission line ratios and find {f}<SUB>{{C</SUB>}{{IV}}}/{f}<SUB>{Ly</SUB>α }≲ 0.32 and {f}<SUB>{{C</SUB>}{{III}}]}/{f}<SUB>{Ly</SUB>α }≲ 0.23, in good agreement with other values published in the literature. | en_US |
dc.language.iso | eng | en_US |
dc.title | The Grism Lens-Amplified Survey from Space (GLASS). III. A Census of Lyα Emission at z ≳ 7 from HST Spectroscopy | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/818/1/38 | en_US |
dc.identifier.scopus | 2-s2.0-84959095960 | en_US |
dc.identifier.isi | 000370370800038 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/818/1/38 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 818 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 38 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...818...38S | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0003-0980-1499 | - |
crisitem.author.orcid | 0000-0001-8940-6768 | - |
crisitem.author.orcid | 0000-0003-3820-2823 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
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