A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies
Autor(a) principal: | |
---|---|
Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/108963 |
Resumo: | We present a detailed investigation of the incidence of circumnuclear dust structure in a large, well-matched sample of early-type galaxies with and without active galactic nuclei (AGNs). All 34 early-type AGN hosts in our sample have circumnuclear dust, while dust is only observed in 26% (9) of a pair-matched sample of 34 early-type, inactive galaxies. This result demonstrates a strong correlation between the presence of circumnuclear dust and accretion onto the central, supermassive black hole in elliptical and lenticular galaxies. This correlation is not present at later Hubble types, where a sample of 31 active and 31 inactive galaxies all contain circumnuclear dust. These archival, Hubble Space Telescope observations reveal a wide range of mostly chaotic dust morphologies. Current estimates suggest the dust settling or destruction time is on order of 108 yr, and therefore the presence of dust in ~50% of early-type galaxies requires frequent replenishment and similarly frequent fueling of their central supermassive black holes. The observed dust could be internally produced (via stellar winds) or externally accreted, although there are observational challenges for both of these scenarios. Our analysis also reveals that approximately one-third of the early-type galaxies without circumnuclear dust have nuclear stellar disks. These nuclear stellar disks may provide a preferred kinematic axis to externally accreted material, and this material may in turn form new stars in these disks. The observed incidence of nuclear stellar disks and circumnuclear dust suggests that episodic replenishment of nuclear stellar disks occurs and is approximately concurrent with the fueling of the central AGN. |
id |
UFRGS-2_328e66d751770e467e85c7d82a6136e4 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/108963 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Lopes, Ramiro Duarte SimõesStorchi-Bergmann, ThaisaSaraiva, Maria de Fátima OliveiraMartini, Paul2015-01-15T02:15:06Z20070004-637Xhttp://hdl.handle.net/10183/108963000595151We present a detailed investigation of the incidence of circumnuclear dust structure in a large, well-matched sample of early-type galaxies with and without active galactic nuclei (AGNs). All 34 early-type AGN hosts in our sample have circumnuclear dust, while dust is only observed in 26% (9) of a pair-matched sample of 34 early-type, inactive galaxies. This result demonstrates a strong correlation between the presence of circumnuclear dust and accretion onto the central, supermassive black hole in elliptical and lenticular galaxies. This correlation is not present at later Hubble types, where a sample of 31 active and 31 inactive galaxies all contain circumnuclear dust. These archival, Hubble Space Telescope observations reveal a wide range of mostly chaotic dust morphologies. Current estimates suggest the dust settling or destruction time is on order of 108 yr, and therefore the presence of dust in ~50% of early-type galaxies requires frequent replenishment and similarly frequent fueling of their central supermassive black holes. The observed dust could be internally produced (via stellar winds) or externally accreted, although there are observational challenges for both of these scenarios. Our analysis also reveals that approximately one-third of the early-type galaxies without circumnuclear dust have nuclear stellar disks. These nuclear stellar disks may provide a preferred kinematic axis to externally accreted material, and this material may in turn form new stars in these disks. The observed incidence of nuclear stellar disks and circumnuclear dust suggests that episodic replenishment of nuclear stellar disks occurs and is approximately concurrent with the fueling of the central AGN.application/pdfengThe astrophysical journal. Chicago. Vol. 655, no. 2, pt. 1 (Feb. 2007), p. 718-734Buracos negrosGaláxias ativasNucleo galaticoPoeira cosmicaAcreçãoDust, extinctionGalaxies: activeGalaxies: elliptical and lenticular, cDGalaxies: nucleiGalaxies: structureISM: structureA strong correlation between circumnuclear dust and black hole accretion in early-type galaxiesEstrangeiroinfo: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:UFRGSORIGINAL000595151.pdf000595151.pdfTexto completo (inglês)application/pdf1483185http://www.lume.ufrgs.br/bitstream/10183/108963/1/000595151.pdf24810afbbcd9a03cfe1717098d310de7MD51TEXT000595151.pdf.txt000595151.pdf.txtExtracted Texttext/plain61359http://www.lume.ufrgs.br/bitstream/10183/108963/2/000595151.pdf.txtfd41fcf268fa63755434eec8ba904cfcMD52THUMBNAIL000595151.pdf.jpg000595151.pdf.jpgGenerated Thumbnailimage/jpeg1891http://www.lume.ufrgs.br/bitstream/10183/108963/3/000595151.pdf.jpg09f28b2218bc8b80314ba52fb8eefd91MD5310183/1089632018-10-23 08:40:13.954oai:www.lume.ufrgs.br:10183/108963Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-23T11:40:13Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
title |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
spellingShingle |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies Lopes, Ramiro Duarte Simões Buracos negros Galáxias ativas Nucleo galatico Poeira cosmica Acreção Dust, extinction Galaxies: active Galaxies: elliptical and lenticular, cD Galaxies: nuclei Galaxies: structure ISM: structure |
title_short |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
title_full |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
title_fullStr |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
title_full_unstemmed |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
title_sort |
A strong correlation between circumnuclear dust and black hole accretion in early-type galaxies |
author |
Lopes, Ramiro Duarte Simões |
author_facet |
Lopes, Ramiro Duarte Simões Storchi-Bergmann, Thaisa Saraiva, Maria de Fátima Oliveira Martini, Paul |
author_role |
author |
author2 |
Storchi-Bergmann, Thaisa Saraiva, Maria de Fátima Oliveira Martini, Paul |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Lopes, Ramiro Duarte Simões Storchi-Bergmann, Thaisa Saraiva, Maria de Fátima Oliveira Martini, Paul |
dc.subject.por.fl_str_mv |
Buracos negros Galáxias ativas Nucleo galatico Poeira cosmica Acreção |
topic |
Buracos negros Galáxias ativas Nucleo galatico Poeira cosmica Acreção Dust, extinction Galaxies: active Galaxies: elliptical and lenticular, cD Galaxies: nuclei Galaxies: structure ISM: structure |
dc.subject.eng.fl_str_mv |
Dust, extinction Galaxies: active Galaxies: elliptical and lenticular, cD Galaxies: nuclei Galaxies: structure ISM: structure |
description |
We present a detailed investigation of the incidence of circumnuclear dust structure in a large, well-matched sample of early-type galaxies with and without active galactic nuclei (AGNs). All 34 early-type AGN hosts in our sample have circumnuclear dust, while dust is only observed in 26% (9) of a pair-matched sample of 34 early-type, inactive galaxies. This result demonstrates a strong correlation between the presence of circumnuclear dust and accretion onto the central, supermassive black hole in elliptical and lenticular galaxies. This correlation is not present at later Hubble types, where a sample of 31 active and 31 inactive galaxies all contain circumnuclear dust. These archival, Hubble Space Telescope observations reveal a wide range of mostly chaotic dust morphologies. Current estimates suggest the dust settling or destruction time is on order of 108 yr, and therefore the presence of dust in ~50% of early-type galaxies requires frequent replenishment and similarly frequent fueling of their central supermassive black holes. The observed dust could be internally produced (via stellar winds) or externally accreted, although there are observational challenges for both of these scenarios. Our analysis also reveals that approximately one-third of the early-type galaxies without circumnuclear dust have nuclear stellar disks. These nuclear stellar disks may provide a preferred kinematic axis to externally accreted material, and this material may in turn form new stars in these disks. The observed incidence of nuclear stellar disks and circumnuclear dust suggests that episodic replenishment of nuclear stellar disks occurs and is approximately concurrent with the fueling of the central AGN. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2015-01-15T02:15:06Z |
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/10183/108963 |
dc.identifier.issn.pt_BR.fl_str_mv |
0004-637X |
dc.identifier.nrb.pt_BR.fl_str_mv |
000595151 |
identifier_str_mv |
0004-637X 000595151 |
url |
http://hdl.handle.net/10183/108963 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Chicago. Vol. 655, no. 2, pt. 1 (Feb. 2007), p. 718-734 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/108963/1/000595151.pdf http://www.lume.ufrgs.br/bitstream/10183/108963/2/000595151.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/108963/3/000595151.pdf.jpg |
bitstream.checksum.fl_str_mv |
24810afbbcd9a03cfe1717098d310de7 fd41fcf268fa63755434eec8ba904cfc 09f28b2218bc8b80314ba52fb8eefd91 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224862760435712 |