Author | dc.contributor.author | Francke Henriquez, Harold | |
Author | dc.contributor.author | Gawiser, Eric | es_CL |
Author | dc.contributor.author | Lira Teillery, Paulina | es_CL |
Author | dc.contributor.author | Treister, Ezequiel | es_CL |
Author | dc.contributor.author | Virani, Shanil N. | es_CL |
Author | dc.contributor.author | Cardamone, Carie | es_CL |
Author | dc.contributor.author | Urry, C. Megan | es_CL |
Author | dc.contributor.author | van Dokkum, Pieter | es_CL |
Author | dc.contributor.author | Quadri, Ryan | es_CL |
Admission date | dc.date.accessioned | 2010-01-22T12:28:57Z | |
Available date | dc.date.available | 2010-01-22T12:28:57Z | |
Publication date | dc.date.issued | 2008-01-20 | |
Cita de ítem | dc.identifier.citation | ASTROPHYSICAL JOURNAL LETTERS Volume: 673 Issue: 1 Pages: L13-L16 Published: JAN 20 2008 | en_US |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/125204 | |
Abstract | dc.description.abstract | We present the first clustering results of X-ray-selected active galactic nuclei (AGNs) at z similar to 3. Using Chandra X-ray imaging and UVR optical colors from MUSYC photometry in the Extended Chandra Deep Field-South field, we selected a sample of 58 z similar to 3 AGN candidates. From the optical data we also selected 1385 luminous blue galaxies (LBGs) at 2.8 < z < 3.8 with R < 25.5. We performed autocorrelation and cross-correlation analyses, and here we present results for the clustering amplitudes and dark matter (DM) halo masses of each sample. For the LBGs we find a correlation length of r(0,LBG) = 6.7 +/- 0.5 Mpc, implying a bias value of 3.5 +/- 0.3 and DM halo masses of log(M-min/M-circle dot) = 11.8 +/- 0.1. The AGN-LBG cross-correlation yields r(0,AGN-LBG) = 8.7 +/- 1.9 Mpc, implying for AGNs at 2.8 < z < 3.8 a bias value of 5.5 +/- 2.0 and DM halo masses of log(M-min/M-circle dot) = 12.6(-0.8)(+0.5). Evolution of DM halos in the Lambda CDM cosmology implies that today these z similar to 3 AGNs are found in high-mass galaxies with a typical luminosity of 7(-2)(+4)L*. | en_US |
Lenguage | dc.language.iso | en | en_US |
Publisher | dc.publisher | UNIV CHICAGO PRESS | en_US |
Keywords | dc.subject | DEEP FIELD-SOUTH | en_US |
Título | dc.title | Clustering of intermediate-luminosity x-ray-selected active galactic nuclei at z similar to 3 | en_US |
Document type | dc.type | Artículo de revista | |