Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars

We report the distribution of black hole (BH) masses and Eddingont ratios estimated for a sample of 131 low luminosity quasars in the early cosmic epoch (5.6 < z < 7.0). Our work is based on the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, which has constructed a low...

Descripción completa

Detalles Bibliográficos
Autores: Takahashi, A., Matsuoka, Y., Onoue, M., Strauss, M. A., Kashikawa, N., Toba, Y., Iwasawa, Kazushi, Imanishi, M., Akiyama, M., Kawaguchi, T., Noboriguchi, A., Lee, C.-H.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/218258
Acceso en línea:https://hdl.handle.net/2445/218258
Access Level:acceso abierto
Palabra clave:Forats negres (Astronomia)
Galàxies
Quàsars
Black holes (Astronomy)
Galaxies
Quasars
id ES_578d741fb12fbcb5992b3a2ec1efbc31
oai_identifier_str oai:diposit.ub.edu:2445/218258
network_acronym_str ES
network_name_str España
repository_id_str
spelling Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z QuasarsTakahashi, A.Matsuoka, Y.Onoue, M.Strauss, M. A.Kashikawa, N.Toba, Y.Iwasawa, KazushiImanishi, M.Akiyama, M.Kawaguchi, T.Noboriguchi, A.Lee, C.-H.Forats negres (Astronomia)GalàxiesQuàsarsBlack holes (Astronomy)GalaxiesQuasarsWe report the distribution of black hole (BH) masses and Eddingont ratios estimated for a sample of 131 low luminosity quasars in the early cosmic epoch (5.6 < z < 7.0). Our work is based on the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, which has constructed a low luminosity quasar sample down to M1450 ∼ − 21 mag, exploiting the survey data of Hyper Suprime-Cam installed on Subaru Telescope. The discovery spectra of these quasars are limited to the rest-frame wavelengths of ∼1200–1400 Å, which contain no emission lines that can be used as BH mass estimators. In order to overcome this problem, we made use of low-z counterpart spectra from the Sloan Digital Sky Survey, which are spectrally matched to the high-z spectra in overlapping wavelengths. We then combined the C iv emission line widths of the counterparts with the continuum luminosity from the SHELLQs data to estimate BH masses. The resulting BH mass distribution has a range of ∼107–10M⊙, with most of the quasars having BH masses ∼108M⊙ with sub-Eddington accretion. The present study provides not only a new insight into normal quasars in the reionization epoch, but also a new promising way to estimate BH masses of high-z quasars without near-infrared spectroscopy.Institute of Physics (IOP)2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/218258Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3847/1538-4357/ad045eAstrophysical Journal, 2024, vol. 960, num.112https://doi.org/10.3847/1538-4357/ad045e(c) American Astronomical Society, 2024info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2182582026-05-27T06:46:51Z
dc.title.none.fl_str_mv Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
title Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
spellingShingle Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
Takahashi, A.
Forats negres (Astronomia)
Galàxies
Quàsars
Black holes (Astronomy)
Galaxies
Quasars
title_short Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
title_full Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
title_fullStr Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
title_full_unstemmed Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
title_sort Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z 6 Estimated via Spectral Comparison with Low-z Quasars
dc.creator.none.fl_str_mv Takahashi, A.
Matsuoka, Y.
Onoue, M.
Strauss, M. A.
Kashikawa, N.
Toba, Y.
Iwasawa, Kazushi
Imanishi, M.
Akiyama, M.
Kawaguchi, T.
Noboriguchi, A.
Lee, C.-H.
author Takahashi, A.
author_facet Takahashi, A.
Matsuoka, Y.
Onoue, M.
Strauss, M. A.
Kashikawa, N.
Toba, Y.
Iwasawa, Kazushi
Imanishi, M.
Akiyama, M.
Kawaguchi, T.
Noboriguchi, A.
Lee, C.-H.
author_role author
author2 Matsuoka, Y.
Onoue, M.
Strauss, M. A.
Kashikawa, N.
Toba, Y.
Iwasawa, Kazushi
Imanishi, M.
Akiyama, M.
Kawaguchi, T.
Noboriguchi, A.
Lee, C.-H.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Forats negres (Astronomia)
Galàxies
Quàsars
Black holes (Astronomy)
Galaxies
Quasars
topic Forats negres (Astronomia)
Galàxies
Quàsars
Black holes (Astronomy)
Galaxies
Quasars
description We report the distribution of black hole (BH) masses and Eddingont ratios estimated for a sample of 131 low luminosity quasars in the early cosmic epoch (5.6 < z < 7.0). Our work is based on the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, which has constructed a low luminosity quasar sample down to M1450 ∼ − 21 mag, exploiting the survey data of Hyper Suprime-Cam installed on Subaru Telescope. The discovery spectra of these quasars are limited to the rest-frame wavelengths of ∼1200–1400 Å, which contain no emission lines that can be used as BH mass estimators. In order to overcome this problem, we made use of low-z counterpart spectra from the Sloan Digital Sky Survey, which are spectrally matched to the high-z spectra in overlapping wavelengths. We then combined the C iv emission line widths of the counterparts with the continuum luminosity from the SHELLQs data to estimate BH masses. The resulting BH mass distribution has a range of ∼107–10M⊙, with most of the quasars having BH masses ∼108M⊙ with sub-Eddington accretion. The present study provides not only a new insight into normal quasars in the reionization epoch, but also a new promising way to estimate BH masses of high-z quasars without near-infrared spectroscopy.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/218258
url https://hdl.handle.net/2445/218258
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3847/1538-4357/ad045e
Astrophysical Journal, 2024, vol. 960, num.112
https://doi.org/10.3847/1538-4357/ad045e
dc.rights.none.fl_str_mv (c) American Astronomical Society, 2024
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Astronomical Society, 2024
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408459953274880
score 15,811543

Similares en LA Referencia