Search for Galaxies at z>4 from a Deep Multicolor Survey
| dc.creator | Giallongo, E. | |
| dc.creator | Charlot, S. | |
| dc.creator | Cristiani, S. | |
| dc.creator | D'Odorico, S. | |
| dc.creator | Fontana, A. | |
| dc.date | 1996-05-31 | |
| dc.date.accessioned | 2026-07-07T06:28:28Z | |
| dc.date.available | 2026-07-07T06:28:28Z | |
| dc.description | We present deep BVrI multicolor photometry in the field of the quasar BR1202-07 (z_{em}=4.694) aimed at selecting field galaxies at z>4. We compare the observed colors of the galaxies in the field with those predicted by spectral synthesis models including UV absorption by the intergalactic medium and we define a robust multicolor selection of galaxies at z>4. We provide spectroscopic confirmation of the high redshift QSO-companion galaxy (z=4.702) selected by our method. The first estimate of the surface density of galaxies in the redshift interval 4<z<4.5 is obtained for the same field, corresponding to a comoving volume density of ~ 10^{-3}$ Mpc$^{-3}. This provides a lower limit to the average star formation rate of the order of 10^{-2} Mo/yr/Mpc^{-3} at z~ 4.25. | |
| dc.description | 8 pages including 4 figures, invited talk to appear in The Early Universe with VLT (Springer) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9605196 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9605196 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97711 | |
| dc.subject | Astrophysics | |
| dc.title | Search for Galaxies at z>4 from a Deep Multicolor Survey | |
| dc.type | text |