%0 Generic %1 Falder2011 %A Falder, J. T. %A Stevens, J. A. %A Jarvis, Matt J. %A Bonfield, D. G. %A Lacy, M. %A Farrah, D. %A Oliver, S. %A Surace, J. %A Mauduit, J. C. %A Vaccari, M. %A Marchetti, L. %A González-Solares, E. %A Afonso, J. %A Cava, A. %A Seymour, N. %D 2011 %K clustering environment qso %T The Spitzer Extragalactic Representative Volume Survey (SERVS): The Environments of High-z SDSS Quasi-Stellar-Objects %U http://arxiv.org/abs/1105.0586 %X 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\mum colour 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) over-density of galaxies around QSOs in a redshift bin centred on z ~ 2.0 and a (> 2-\sigma) over-density of galaxies around QSOs in a redshift bin centred on z ~ 3.3. We compare our findings to the predictions of a semi-analytic galaxy formation model, based on the ŁambdaCDM millennium simulation, and find for both redshift bins that the model predictions match well the source-density we have measured from the SERVS data.

@misc{Falder2011, abstract = { 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 colour 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}) over-density of galaxies around QSOs in a redshift bin centred on z ~ 2.0 and a (> 2-{\sigma}) over-density of galaxies around QSOs in a redshift bin centred on z ~ 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. }, added-at = {2011-05-04T18:33:12.000+0200}, author = {Falder, J. T. and Stevens, J. A. and Jarvis, Matt J. and Bonfield, D. G. and Lacy, M. and Farrah, D. and Oliver, S. and Surace, J. and Mauduit, J. C. and Vaccari, M. and Marchetti, L. and González-Solares, E. and Afonso, J. and Cava, A. and Seymour, N.}, biburl = {https://www.bibsonomy.org/bibtex/2f2770a3e8fa4938a512bec9dc1b55126/miki}, description = {[1105.0586] The Spitzer Extragalactic Representative Volume Survey (SERVS): The Environments of High-z SDSS Quasi-Stellar-Objects}, interhash = {3ac01230c45f053e42f7813012caee6f}, intrahash = {f2770a3e8fa4938a512bec9dc1b55126}, keywords = {clustering environment qso}, note = {cite arxiv:1105.0586 Comment: 13 pages, 12 figures, Accepted by ApJ}, timestamp = {2011-05-04T18:33:12.000+0200}, title = {The Spitzer Extragalactic Representative Volume Survey (SERVS): The Environments of High-z SDSS Quasi-Stellar-Objects}, url = {http://arxiv.org/abs/1105.0586}, year = 2011 }