The Role of Environment in Low-level Active Galactic Nucleus Activity: No Evidence for Cluster Enhancement
dc.contributor.author | Miller, Brendan P. | en_US |
dc.contributor.author | Gallo, Elena | en_US |
dc.contributor.author | Treu, Tommaso | en_US |
dc.contributor.author | Woo, Jong-Hak | en_US |
dc.date.accessioned | 2013-06-28T15:25:27Z | |
dc.date.available | 2013-06-28T15:25:27Z | |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Miller, Brendan P.; Gallo, Elena; Treu, Tommaso; Woo, Jong-Hak (2012). "The Role of Environment in Low-level Active Galactic Nucleus Activity: No Evidence for Cluster Enhancement." The Astrophysical Journal Letters 745(1): L13. <http://hdl.handle.net/2027.42/98530> | en_US |
dc.identifier.uri | http://stacks.iop.org/2041-8205/745/i=1/a=L13 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/98530 | |
dc.description.abstract | We use the AMUSE-Virgo and AMUSE-Field surveys for nuclear X-ray emission in early-type galaxies to conduct a controlled comparison of low-level supermassive black hole activity within cluster and field spheroids. While both the Virgo and the Field samples feature highly sub-Eddington X-ray luminosities ( L X / L Edd between ~10 –8 and 10 –4 ), we find that after accounting for the influence of host galaxy stellar mass, the field early-type galaxies tend toward marginally greater (0.38 ± 0.14 dex) nuclear X-ray luminosities, at a given black hole mass, than their cluster counterparts. This trend is qualitatively consistent with the field black holes having access to a greater reservoir of fuel, plausibly in the form of cold gas located near the nucleus. We are able to rule out at high confidence the alternative of enhanced X-ray activity within clusters. Presuming nuclear X-ray emission correlates with the total energy and momentum output of these weakly accreting black holes, this indicates that low-level active galactic nucleus feedback is not generally stronger within typical cluster galaxies than in the field. These results confirm that for most cluster early-type galaxies (i.e., excluding brightest cluster galaxies) direct environmental effects, such as gas stripping, are more relevant in quenching star formation. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | The Role of Environment in Low-level Active Galactic Nucleus Activity: No Evidence for Cluster Enhancement | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/98530/1/2041-8205_745_1_L13.pdf | |
dc.identifier.doi | 10.1088/2041-8205/745/1/L13 | en_US |
dc.identifier.source | The Astrophysical Journal Letters | en_US |
dc.owningcollname | Physics, Department of |
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