LAGER Lyα Luminosity Function at z ∼ 7: Implications for Reionization
| dc.contributor.author | Isak G. B. Wold | |
| dc.contributor.author | Sangeeta Malhotra | |
| dc.contributor.author | James Rhoads | |
| dc.contributor.author | Junxian Wang | |
| dc.contributor.author | Weida Hu | |
| dc.contributor.author | Lucia A. Perez | |
| dc.contributor.author | Zhen-Ya Zheng | |
| dc.contributor.author | Ali Ahmad Khostovan | |
| dc.contributor.author | Alistair R. Walker | |
| dc.contributor.author | L. Felipe Barrientos | |
| dc.contributor.author | Jorge González-López | |
| dc.contributor.author | Santosh Harish | |
| dc.contributor.author | Leopoldo Infante | |
| dc.contributor.author | Chunyan Jiang | |
| dc.contributor.author | John Pharo | |
| dc.contributor.author | Cristóbal Moya-Sierralta | |
| dc.contributor.author | Franz E. Bauer | |
| dc.contributor.author | Gaspar Galaz | |
| dc.contributor.author | Francisco Valdes | |
| dc.contributor.author | Huan Yang | |
| dc.date.accessioned | 2023-05-19T20:50:08Z | |
| dc.date.available | 2023-05-19T20:50:08Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | We present a new measurement of the Ly alpha luminosity function (LF) at redshift z = 6.9, finding moderate evolution from z = 5.7 that is consistent with a fully or largely ionized z similar to 7 intergalactic medium. Our result is based on four fields of the LAGER (Lyman Alpha Galaxies in the Epoch of Reionization) project. Our survey volume of 6.1 x 10(6) Mpc(3) is double that of the next largest z similar to 7 survey. We combine two new LAGER fields (WIDE12 and GAMA15A) with two previously reported LAGER fields (COSMOS and CDFS). In the new fields, we identify N = 95 new z = 6.9 Ly alpha emitter (LAEs) candidates, characterize our survey's completeness and reliability, and compute Ly alpha LFs. The best-fit Schechter LF parameters for all four LAGER fields are in good general agreement. Two fields (COSMOS and WIDE12) show evidence for a bright-end excess above the Schechter function fit. We find that the Ly alpha luminosity density declines at the same rate as the UV continuum LF from z = 5.7 to 6.9. This is consistent with an intergalactic medium that was fully ionized as early as redshift z similar to 7 or with a volume-averaged neutral hydrogen fraction of x (H I) < 0.33 at 1 sigma. | |
| dc.fuente.origen | ORCID-mayo23 | |
| dc.identifier.doi | 10.3847/1538-4357/ac4997 | |
| dc.identifier.uri | https://repositorio.uc.cl/handle/11534/70168 | |
| dc.language.iso | en | |
| dc.rights | acceso restringido | |
| dc.title | LAGER Lyα Luminosity Function at z ∼ 7: Implications for Reionization | es_ES |
| dc.type | artículo | |
| sipa.codpersvinculados | 1000955 | |
| sipa.index | WOS |