TY - JOUR
T1 - The spitzer extragalactic representative volume survey (SERVS)
T2 - the environments of high-z SDSS quasi-stellar-objects
AU - Falder, J.
AU - Stevens, J. A.
AU - Jarvis, M.J.
AU - Bonfield, David
AU - Lacy, M.
AU - Farrah, D.
AU - Oliver, S.
AU - Surace, J.
AU - Mauduit, J.C.
AU - Vaccari, M.
AU - Marchetti, L.
AU - Gonzalez-Solares, E.
AU - Afonso, J.
AU - Cava, A.
AU - Seymour, N.
N1 - ‘In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.’ Original article can be found at : http://iopscience.iop.org/ Copyright American Astronomical Society
PY - 2011
Y1 - 2011
N2 - This paper presents a study of the environments of SDSS quasi-stellar objects (QSOs) in the Spitzer Extragalactic Representative Volume Survey (SERVS). We concentrate on the high-redshift QSOs as these have not been studied in large numbers with data of this depth before. We use the IRAC 3.6-4.5 mu m color of objects and ancillary r-band data to filter out as much foreground contamination as possible. This technique allows us to find a significant (>4 sigma) overdensity of galaxies around QSOs in a redshift bin centered on z similar to 2.0 and an (>2 sigma) overdensity of galaxies around QSOs in a redshift bin centered on z similar to 3.3. We compare our findings to the predictions of a semi-analytic galaxy formation model, based on the Lambda CDM millennium simulation, and find for both redshift bins that the model predictions match well the source density we have measured from the SERVS data.
AB - This paper presents a study of the environments of SDSS quasi-stellar objects (QSOs) in the Spitzer Extragalactic Representative Volume Survey (SERVS). We concentrate on the high-redshift QSOs as these have not been studied in large numbers with data of this depth before. We use the IRAC 3.6-4.5 mu m color of objects and ancillary r-band data to filter out as much foreground contamination as possible. This technique allows us to find a significant (>4 sigma) overdensity of galaxies around QSOs in a redshift bin centered on z similar to 2.0 and an (>2 sigma) overdensity of galaxies around QSOs in a redshift bin centered on z similar to 3.3. We compare our findings to the predictions of a semi-analytic galaxy formation model, based on the Lambda CDM millennium simulation, and find for both redshift bins that the model predictions match well the source density we have measured from the SERVS data.
KW - galaxies : clusters : general
KW - galaxies : evolution
KW - quasars : general
UR - http://www.scopus.com/inward/record.url?scp=79959999121&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/735/2/123
DO - 10.1088/0004-637X/735/2/123
M3 - Article
AN - SCOPUS:79959999121
SN - 0004-637X
VL - 735
JO - The Astrophysical Journal
JF - The Astrophysical Journal
IS - 2
M1 - 123
ER -