SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/201478 |
Resumo: | We present a sample of 48 nearby galaxies with central, biconical outflows identified by the Mapping Nearby Galaxies at APO survey. All considered galaxies have star-formation-driven biconical (SFB) central outflows, with no signs of an active galactic nucleus. We find that the SFB outflows require high central concentration of the star formation rate. This increases the gas velocity dispersion over the equilibrium limit and helps maintain the gas outflows. The central starbursts increase the metallicity, extinction, and the [α/Fe] ratio in the gas. A significant amount of young stellar population at the centers suggests that the SFBs are associated with the formation of young bulges in galaxies. More than 70% of SFB galaxies are group members or have companions with no prominent interaction, or show asymmetry of external isophotes. In 15% of SFB cases, stars and gas rotate in the opposite directions, which points at the gas infall from satellites as the primary reason for triggering the SFB phenomena. |
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Bizyaev, D.Chen, YanmeiShi, YongRiffel, Rogemar AndréRiffel, RogérioDiamond-Stanic, Aleksandar M.Roy, Namrata2019-11-09T03:50:14Z20190004-637Xhttp://hdl.handle.net/10183/201478001104299We present a sample of 48 nearby galaxies with central, biconical outflows identified by the Mapping Nearby Galaxies at APO survey. All considered galaxies have star-formation-driven biconical (SFB) central outflows, with no signs of an active galactic nucleus. We find that the SFB outflows require high central concentration of the star formation rate. This increases the gas velocity dispersion over the equilibrium limit and helps maintain the gas outflows. The central starbursts increase the metallicity, extinction, and the [α/Fe] ratio in the gas. A significant amount of young stellar population at the centers suggests that the SFBs are associated with the formation of young bulges in galaxies. More than 70% of SFB galaxies are group members or have companions with no prominent interaction, or show asymmetry of external isophotes. In 15% of SFB cases, stars and gas rotate in the opposite directions, which points at the gas infall from satellites as the primary reason for triggering the SFB phenomena.application/pdfengThe astrophysical journal. Bristol. Vol. 882, no. 2 (Sep. 2019), 145, 9 p.Formacao de estrelasGalaxias espiraisGas ionizadoGalaxies: spiralGalaxies: star formationISM: jets and out flowsISM: kinematics and dynamicsSDSS-IV MaNGA : star-formation-driven biconical outflows in the local universeEstrangeiroinfo: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:UFRGSTEXT001104299.pdf.txt001104299.pdf.txtExtracted Texttext/plain43962http://www.lume.ufrgs.br/bitstream/10183/201478/2/001104299.pdf.txtb0815602260e109cca0d04dd5a068040MD52ORIGINAL001104299.pdfTexto completo (inglês)application/pdf678949http://www.lume.ufrgs.br/bitstream/10183/201478/1/001104299.pdf2540caac34b77cf4479f21bb5c71dda5MD5110183/2014782023-09-24 03:37:49.530957oai:www.lume.ufrgs.br:10183/201478Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-24T06:37:49Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
title |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
spellingShingle |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe Bizyaev, D. Formacao de estrelas Galaxias espirais Gas ionizado Galaxies: spiral Galaxies: star formation ISM: jets and out flows ISM: kinematics and dynamics |
title_short |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
title_full |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
title_fullStr |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
title_full_unstemmed |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
title_sort |
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe |
author |
Bizyaev, D. |
author_facet |
Bizyaev, D. Chen, Yanmei Shi, Yong Riffel, Rogemar André Riffel, Rogério Diamond-Stanic, Aleksandar M. Roy, Namrata |
author_role |
author |
author2 |
Chen, Yanmei Shi, Yong Riffel, Rogemar André Riffel, Rogério Diamond-Stanic, Aleksandar M. Roy, Namrata |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Bizyaev, D. Chen, Yanmei Shi, Yong Riffel, Rogemar André Riffel, Rogério Diamond-Stanic, Aleksandar M. Roy, Namrata |
dc.subject.por.fl_str_mv |
Formacao de estrelas Galaxias espirais Gas ionizado |
topic |
Formacao de estrelas Galaxias espirais Gas ionizado Galaxies: spiral Galaxies: star formation ISM: jets and out flows ISM: kinematics and dynamics |
dc.subject.eng.fl_str_mv |
Galaxies: spiral Galaxies: star formation ISM: jets and out flows ISM: kinematics and dynamics |
description |
We present a sample of 48 nearby galaxies with central, biconical outflows identified by the Mapping Nearby Galaxies at APO survey. All considered galaxies have star-formation-driven biconical (SFB) central outflows, with no signs of an active galactic nucleus. We find that the SFB outflows require high central concentration of the star formation rate. This increases the gas velocity dispersion over the equilibrium limit and helps maintain the gas outflows. The central starbursts increase the metallicity, extinction, and the [α/Fe] ratio in the gas. A significant amount of young stellar population at the centers suggests that the SFBs are associated with the formation of young bulges in galaxies. More than 70% of SFB galaxies are group members or have companions with no prominent interaction, or show asymmetry of external isophotes. In 15% of SFB cases, stars and gas rotate in the opposite directions, which points at the gas infall from satellites as the primary reason for triggering the SFB phenomena. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-11-09T03:50:14Z |
dc.date.issued.fl_str_mv |
2019 |
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/10183/201478 |
dc.identifier.issn.pt_BR.fl_str_mv |
0004-637X |
dc.identifier.nrb.pt_BR.fl_str_mv |
001104299 |
identifier_str_mv |
0004-637X 001104299 |
url |
http://hdl.handle.net/10183/201478 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Bristol. Vol. 882, no. 2 (Sep. 2019), 145, 9 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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