The Optical Extragalactic Background Light from Resolved Galaxies
| dc.creator | Pozzetti, Lucia | |
| dc.creator | Madau, Piero | |
| dc.date | 2000-11-20 | |
| dc.date.accessioned | 2026-07-25T17:57:44Z | |
| dc.description | We discuss the ultraviolet to near-IR galaxy counts from the deepest imaging surveys, including the northern and southern Hubble Deep Fields. The logarithmic slope of the galaxy number-magnitude relation is flatter than 0.4 in all seven UBVIJHK optical bandpasses at faint magnitudes, i.e. the light from resolved galaxies has converged from the UV to the near-IR. Most of the galaxy contribution to the extragalactic background light (EBL) comes from relatively bright, low-redshift objects (50% at V_AB<21 and 90% at V_AB<25.5). We find a lower limit to the surface brightness of the optical EBL of about 15 nW/m^2/sterad, comparable to the intensity of the far-IR background from COBE data. Diffuse light, lost because of surface brightness selection effects, may add substantially to the EBL. | |
| dc.description | 15 pages, 15 figures. Invited talk at IAU Symposium 204, "The Extragalactic Infrared Background and its Cosmological Implications", Manchester, August 2000, eds. M.Harwit and M.G.Hauser | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0011359 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0011359 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/52323 | |
| dc.subject | Astrophysics | |
| dc.title | The Optical Extragalactic Background Light from Resolved Galaxies | |
| dc.type | text |