The mid-infrared environments of high-redshift radio galaxies
dc.contributor.author | Galametz, A. | |
dc.contributor.author | Stern, D. | |
dc.contributor.author | De Breuck, C. | |
dc.contributor.author | Hatch, N. | |
dc.contributor.author | Mayo, J. | |
dc.contributor.author | Miley, G. | |
dc.contributor.author | Rettura, A. | |
dc.contributor.author | Seymour, Nick | |
dc.contributor.author | Adam Stanford, S. | |
dc.contributor.author | Vernet, J. | |
dc.date.accessioned | 2017-01-30T11:27:04Z | |
dc.date.available | 2017-01-30T11:27:04Z | |
dc.date.created | 2016-01-18T20:00:47Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Galametz, A. and Stern, D. and De Breuck, C. and Hatch, N. and Mayo, J. and Miley, G. and Rettura, A. et al. 2012. The mid-infrared environments of high-redshift radio galaxies. Astrophysical Journal. 749 (2). | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/11823 | |
dc.identifier.doi | 10.1088/0004-637X/749/2/169 | |
dc.description.abstract |
Taking advantage of the impressive sensitivity of Spitzer to detect massive galaxies at high redshift, we study the mid-infrared environments of powerful, high-redshift radio galaxies at 1.2 < z < 3. Galaxy cluster member candidates were isolated using a single Spitzer/IRAC mid-infrared color criterion, [3.6]-[4.5] > –0.1 (AB), in the fields of 48 radio galaxies at 1.2 < z < 3. Using a counts-in-cell analysis, we identify a field as overdense when 15 or more red IRAC sources are found within 1' (i.e., 0.5 Mpc at 1.2 < z < 3) of the radio galaxy to the 5σ flux density limits of our IRAC data (f 4.5 = 13.4 μJy). We find that radio galaxies lie preferentially in medium to dense regions, with 73% of the targeted fields denser than average. Our (shallow) 120 s data permit the rediscovery of previously known clusters and protoclusters associated with radio galaxies as well as the discovery of new promising galaxy cluster candidates at z > 1.2. | |
dc.title | The mid-infrared environments of high-redshift radio galaxies | |
dc.type | Journal Article | |
dcterms.source.volume | 749 | |
dcterms.source.number | 2 | |
dcterms.source.issn | 0004-637X | |
dcterms.source.title | Astrophysical Journal | |
curtin.department | Department of Physics and Astronomy | |
curtin.accessStatus | Open access via publisher |
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