On the evolution of the black-hole : spheroid mass ratio
We present the results of a study which uses the 3CRR sample of radio-loud active galactic nuclei (AGN) to investigate the evolution of the black-hole:spheroid relation in the most massive early-type galaxies from 0 < z < 2. Radio-loud unification is exploited to obtain virial (line-wi...
| Main Authors: | , , , , |
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| Format: | Conference item |
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2006
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| _version_ | 1826261412409769984 |
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| author | McLure, R Jarvis, M Targett, T Dunlop, J Best, P |
| author_facet | McLure, R Jarvis, M Targett, T Dunlop, J Best, P |
| author_sort | McLure, R |
| collection | OXFORD |
| description | We present the results of a study which uses the 3CRR sample of radio-loud active galactic nuclei (AGN) to investigate the evolution of the black-hole:spheroid relation in the most massive early-type galaxies from 0 < z < 2. Radio-loud unification is exploited to obtain virial (line-width) black-hole mass estimates from the 3CRR quasars, and stellar mass estimates from the 3CRR radio galaxies, thereby providing black-hole and stellar mass estimates for a single population of early-type galaxies. At low redshift (z < 1) the 3CRR sample is consistent with a black-hole:spheroid ratio of Mbh/Msph ≃ 0.002, in good agreement with that observed locally for quiescent galaxies of similar stellar mass (Msph ≃ 5 × 1011Mȯ). However, the 3CRR black-hole:spheroid ratio is found to evolve as Mbh/Msph ∝ (1 + z)2.07±0.76, reaching Mbh/Msph ≃ 0.008 by redshift z ≃ 2, providing further evidence that, at least for massive early-type galaxies, the growth of the central supermassive black-hole may be completed before that of the host spheroid. © 2006 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T19:21:02Z |
| format | Conference item |
| id | oxford-uuid:1a18385b-6e60-4592-b86d-6f2e79fdae46 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:21:02Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:1a18385b-6e60-4592-b86d-6f2e79fdae462022-03-26T10:52:46ZOn the evolution of the black-hole : spheroid mass ratioConference itemhttp://purl.org/coar/resource_type/c_5794uuid:1a18385b-6e60-4592-b86d-6f2e79fdae46Symplectic Elements at Oxford2006McLure, RJarvis, MTargett, TDunlop, JBest, PWe present the results of a study which uses the 3CRR sample of radio-loud active galactic nuclei (AGN) to investigate the evolution of the black-hole:spheroid relation in the most massive early-type galaxies from 0 < z < 2. Radio-loud unification is exploited to obtain virial (line-width) black-hole mass estimates from the 3CRR quasars, and stellar mass estimates from the 3CRR radio galaxies, thereby providing black-hole and stellar mass estimates for a single population of early-type galaxies. At low redshift (z < 1) the 3CRR sample is consistent with a black-hole:spheroid ratio of Mbh/Msph ≃ 0.002, in good agreement with that observed locally for quiescent galaxies of similar stellar mass (Msph ≃ 5 × 1011Mȯ). However, the 3CRR black-hole:spheroid ratio is found to evolve as Mbh/Msph ∝ (1 + z)2.07±0.76, reaching Mbh/Msph ≃ 0.008 by redshift z ≃ 2, providing further evidence that, at least for massive early-type galaxies, the growth of the central supermassive black-hole may be completed before that of the host spheroid. © 2006 Elsevier B.V. All rights reserved. |
| spellingShingle | McLure, R Jarvis, M Targett, T Dunlop, J Best, P On the evolution of the black-hole : spheroid mass ratio |
| title | On the evolution of the black-hole : spheroid mass ratio |
| title_full | On the evolution of the black-hole : spheroid mass ratio |
| title_fullStr | On the evolution of the black-hole : spheroid mass ratio |
| title_full_unstemmed | On the evolution of the black-hole : spheroid mass ratio |
| title_short | On the evolution of the black-hole : spheroid mass ratio |
| title_sort | on the evolution of the black hole spheroid mass ratio |
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