A population of dust-rich quasars at z ∼ 1.5
We report Herschel SPIRE (250, 350, and 500 μm) detections of 32 quasars with redshifts 0.5 ≤z < 3.6 from the Herschel Multi-tiered Extragalactic Survey (HerMES). These sources are from a MIPS 24 μm flux-limited sample of 326 quasars in the Lockman Hole Field. The extensive multi-wavelength d...
| Príomhchruthaitheoirí: | , , , , , , , , , , , , , , , , , , , , , |
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| Formáid: | Journal article |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
Institute of Physics Publishing
2012
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| _version_ | 1826269081366429696 |
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| author | Dai, Y Bergeron, J Elvis, M Omont, A Huang, J Bock, J Cooray, A Fazio, G Hatziminaoglou, E Ibar, E Magdis, G Oliver, S Page, M Perez-Fournon, I Rigopoulou, D Roseboom, I Scott, D Symeonidis, M Trichas, M Vieira, J Willmer, C Zemcov, M |
| author_facet | Dai, Y Bergeron, J Elvis, M Omont, A Huang, J Bock, J Cooray, A Fazio, G Hatziminaoglou, E Ibar, E Magdis, G Oliver, S Page, M Perez-Fournon, I Rigopoulou, D Roseboom, I Scott, D Symeonidis, M Trichas, M Vieira, J Willmer, C Zemcov, M |
| author_sort | Dai, Y |
| collection | OXFORD |
| description | We report Herschel SPIRE (250, 350, and 500 μm) detections of 32 quasars with redshifts 0.5 ≤z < 3.6 from the Herschel Multi-tiered Extragalactic Survey (HerMES). These sources are from a MIPS 24 μm flux-limited sample of 326 quasars in the Lockman Hole Field. The extensive multi-wavelength data available in the field permit construction of the rest-frame spectral energy distributions (SEDs) from ultraviolet to the mid-infrared for all sources, and to the far-infrared (FIR) for the 32 objects. Most quasars with Herschel FIR detections show dust temperatures in the range of 25-60K, with a mean of 34K. The FIR luminosities range from 1011.3 to 1013.5 L, qualifying most of their hosts as ultra- or hyper-luminous infrared galaxies. These FIR-detected quasars may represent a dust-rich population, but with lower redshifts and fainter luminosities than quasars observed at 1mm. However, their FIR properties cannot be predicted from shorter wavelengths (0.3-20 μm, rest frame), and the bolometric luminosities derived using the 5100Å index may be underestimated for these FIR-detected quasars. Regardless of redshift, we observed a decline in the relative strength of FIR luminosities for quasars with higher near-infrared luminosities. © 2012. The American Astronomical Society. All rights reserved. |
| first_indexed | 2024-03-06T21:19:28Z |
| format | Journal article |
| id | oxford-uuid:40f43422-d6db-43e4-8070-f0ab864009e6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:19:28Z |
| publishDate | 2012 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:40f43422-d6db-43e4-8070-f0ab864009e62022-03-26T14:40:51ZA population of dust-rich quasars at z ∼ 1.5Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:40f43422-d6db-43e4-8070-f0ab864009e6EnglishSymplectic Elements at OxfordInstitute of Physics Publishing2012Dai, YBergeron, JElvis, MOmont, AHuang, JBock, JCooray, AFazio, GHatziminaoglou, EIbar, EMagdis, GOliver, SPage, MPerez-Fournon, IRigopoulou, DRoseboom, IScott, DSymeonidis, MTrichas, MVieira, JWillmer, CZemcov, MWe report Herschel SPIRE (250, 350, and 500 μm) detections of 32 quasars with redshifts 0.5 ≤z < 3.6 from the Herschel Multi-tiered Extragalactic Survey (HerMES). These sources are from a MIPS 24 μm flux-limited sample of 326 quasars in the Lockman Hole Field. The extensive multi-wavelength data available in the field permit construction of the rest-frame spectral energy distributions (SEDs) from ultraviolet to the mid-infrared for all sources, and to the far-infrared (FIR) for the 32 objects. Most quasars with Herschel FIR detections show dust temperatures in the range of 25-60K, with a mean of 34K. The FIR luminosities range from 1011.3 to 1013.5 L, qualifying most of their hosts as ultra- or hyper-luminous infrared galaxies. These FIR-detected quasars may represent a dust-rich population, but with lower redshifts and fainter luminosities than quasars observed at 1mm. However, their FIR properties cannot be predicted from shorter wavelengths (0.3-20 μm, rest frame), and the bolometric luminosities derived using the 5100Å index may be underestimated for these FIR-detected quasars. Regardless of redshift, we observed a decline in the relative strength of FIR luminosities for quasars with higher near-infrared luminosities. © 2012. The American Astronomical Society. All rights reserved. |
| spellingShingle | Dai, Y Bergeron, J Elvis, M Omont, A Huang, J Bock, J Cooray, A Fazio, G Hatziminaoglou, E Ibar, E Magdis, G Oliver, S Page, M Perez-Fournon, I Rigopoulou, D Roseboom, I Scott, D Symeonidis, M Trichas, M Vieira, J Willmer, C Zemcov, M A population of dust-rich quasars at z ∼ 1.5 |
| title | A population of dust-rich quasars at z ∼ 1.5 |
| title_full | A population of dust-rich quasars at z ∼ 1.5 |
| title_fullStr | A population of dust-rich quasars at z ∼ 1.5 |
| title_full_unstemmed | A population of dust-rich quasars at z ∼ 1.5 |
| title_short | A population of dust-rich quasars at z ∼ 1.5 |
| title_sort | population of dust rich quasars at z ∼ 1 5 |
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