The Star Formation Density at z=7
| dc.creator | Mannucci, F. | |
| dc.date | 2006-11-29 | |
| dc.date.accessioned | 2026-07-07T07:30:59Z | |
| dc.date.available | 2026-07-07T07:30:59Z | |
| dc.description | Near-infrared VLT data of the GOODS-South area were used to look for galaxies at z=7 down to a limiting magnitude of (J+Ks)AB=25.5. No high-redshift candidates were detected, and this provides clear evidence for a strong evolution of the luminosity function between z=6 and z=7, i.e. over a time interval of only 170 Myr. Our constraints provide evidence of a significant decline in the total star formation rate at z=7, which must be less than 40% of that at z=3 and 40-80% of that at z=6. The resulting upper limit to the ionizing flux at z=7 is only marginally consistent with what is required to completely ionize the Universe. | |
| dc.description | to appear in the proceedings of "At the Edge of the Universe", Sintra, Portugal, October 2006 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0611878 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0611878 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/118595 | |
| dc.subject | Astrophysics | |
| dc.title | The Star Formation Density at z=7 | |
| dc.type | text |