BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/249554 |
Resumo: | We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data Release 2 (DR2), a study of 168 nearby (z¯= 0.04, z < 0.6) active galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope X-ray survey observed with the Very Large Telescope (VLT)/X-shooter in the near-infrared (NIR; 0.8–2.4 μm). We find that 49/109 (45%) Seyfert 2 and 35/58 (60%) Seyfert 1 galaxies observed with VLT/X-shooter show at least one NIR high-ionization coronal line (CL; ionization potential χ > 100 eV). Comparing the emission of the [Si vi] λ1.9640 CL with the X-ray emission for the DR2 AGN, we find a significantly tighter correlation, with a lower scatter (0.37 dex) than that for the optical [O iii] λ5007 line (0.71 dex). We do not find any correlation between CL emission and the X-ray photon index Γ. We find a clear trend of line blueshifts with increasing ionization potential in several CLs, such as [Si vi] λ1.9640, [Si x] λ1.4300, [S viii] λ0.9915, and [S ix] λ1.2520, indicating the radial structure of the CL region. Finally, we find a strong underestimation bias in black hole mass measurements of Sy 1.9 using broad Hα due to the presence of significant dust obscuration. In contrast, the broad Paα and Paβ emission lines are in agreement with the M–σ relation. Based on the combined DR1 and DR2 X-shooter sample, the NIR BASS sample now comprises 266 AGN with rest-frame NIR spectroscopic observations, the largest set assembled to date. |
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Brok, Jakob denRiffel, RogérioVeilleux, Sylvain2022-10-03T04:48:38Z20220067-0049http://hdl.handle.net/10183/249554001147258We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data Release 2 (DR2), a study of 168 nearby (z¯= 0.04, z < 0.6) active galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope X-ray survey observed with the Very Large Telescope (VLT)/X-shooter in the near-infrared (NIR; 0.8–2.4 μm). We find that 49/109 (45%) Seyfert 2 and 35/58 (60%) Seyfert 1 galaxies observed with VLT/X-shooter show at least one NIR high-ionization coronal line (CL; ionization potential χ > 100 eV). Comparing the emission of the [Si vi] λ1.9640 CL with the X-ray emission for the DR2 AGN, we find a significantly tighter correlation, with a lower scatter (0.37 dex) than that for the optical [O iii] λ5007 line (0.71 dex). We do not find any correlation between CL emission and the X-ray photon index Γ. We find a clear trend of line blueshifts with increasing ionization potential in several CLs, such as [Si vi] λ1.9640, [Si x] λ1.4300, [S viii] λ0.9915, and [S ix] λ1.2520, indicating the radial structure of the CL region. Finally, we find a strong underestimation bias in black hole mass measurements of Sy 1.9 using broad Hα due to the presence of significant dust obscuration. In contrast, the broad Paα and Paβ emission lines are in agreement with the M–σ relation. Based on the combined DR1 and DR2 X-shooter sample, the NIR BASS sample now comprises 266 AGN with rest-frame NIR spectroscopic observations, the largest set assembled to date.application/pdfengThe astrophysical journal. Supplement series. Chicago. Vol. 261, no. 1 (July 2022), 7, 30 p.Telescópios astronômicosBuracos negrosNucleo galaticoGaláxias ativasEspectroscopiaActive galactic nucleiBASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nucleiEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001147258.pdf.txt001147258.pdf.txtExtracted Texttext/plain121311http://www.lume.ufrgs.br/bitstream/10183/249554/2/001147258.pdf.txtc47fcce71bbaff28cc029d0cb535d889MD52ORIGINAL001147258.pdfTexto completo (inglês)application/pdf4812252http://www.lume.ufrgs.br/bitstream/10183/249554/1/001147258.pdf4e40adfd34e758c4ee42d815bcac99acMD5110183/2495542023-09-24 03:37:21.702061oai:www.lume.ufrgs.br:10183/249554Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-24T06:37:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
title |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
spellingShingle |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei Brok, Jakob den Telescópios astronômicos Buracos negros Nucleo galatico Galáxias ativas Espectroscopia Active galactic nuclei |
title_short |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
title_full |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
title_fullStr |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
title_full_unstemmed |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
title_sort |
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei |
author |
Brok, Jakob den |
author_facet |
Brok, Jakob den Riffel, Rogério Veilleux, Sylvain |
author_role |
author |
author2 |
Riffel, Rogério Veilleux, Sylvain |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Brok, Jakob den Riffel, Rogério Veilleux, Sylvain |
dc.subject.por.fl_str_mv |
Telescópios astronômicos Buracos negros Nucleo galatico Galáxias ativas Espectroscopia |
topic |
Telescópios astronômicos Buracos negros Nucleo galatico Galáxias ativas Espectroscopia Active galactic nuclei |
dc.subject.eng.fl_str_mv |
Active galactic nuclei |
description |
We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data Release 2 (DR2), a study of 168 nearby (z¯= 0.04, z < 0.6) active galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope X-ray survey observed with the Very Large Telescope (VLT)/X-shooter in the near-infrared (NIR; 0.8–2.4 μm). We find that 49/109 (45%) Seyfert 2 and 35/58 (60%) Seyfert 1 galaxies observed with VLT/X-shooter show at least one NIR high-ionization coronal line (CL; ionization potential χ > 100 eV). Comparing the emission of the [Si vi] λ1.9640 CL with the X-ray emission for the DR2 AGN, we find a significantly tighter correlation, with a lower scatter (0.37 dex) than that for the optical [O iii] λ5007 line (0.71 dex). We do not find any correlation between CL emission and the X-ray photon index Γ. We find a clear trend of line blueshifts with increasing ionization potential in several CLs, such as [Si vi] λ1.9640, [Si x] λ1.4300, [S viii] λ0.9915, and [S ix] λ1.2520, indicating the radial structure of the CL region. Finally, we find a strong underestimation bias in black hole mass measurements of Sy 1.9 using broad Hα due to the presence of significant dust obscuration. In contrast, the broad Paα and Paβ emission lines are in agreement with the M–σ relation. Based on the combined DR1 and DR2 X-shooter sample, the NIR BASS sample now comprises 266 AGN with rest-frame NIR spectroscopic observations, the largest set assembled to date. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-10-03T04:48:38Z |
dc.date.issued.fl_str_mv |
2022 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/249554 |
dc.identifier.issn.pt_BR.fl_str_mv |
0067-0049 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001147258 |
identifier_str_mv |
0067-0049 001147258 |
url |
http://hdl.handle.net/10183/249554 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Supplement series. Chicago. Vol. 261, no. 1 (July 2022), 7, 30 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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