The nuclear source of the galactic wind in NGC 253

Autores
Gunthardt, Guillermo Ivan; Díaz, R. J.; Agüero, Maria Paz; Gimeno, G.; Dottori, H.; Camperi, Javier Antonio
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present Brγ emission line kinematics of the nuclear region of NGC 253, recently known to host a strong galactic wind that limits the global star formation of the galaxy. We obtained high-resolution long-slit spectroscopic data with PHOENIX at Gemini South, positioning the slit on the nucleus infrared core (IRC), close to the nuclear disk major axis. The spatial resolution was 0.″35 (∼6 pc) and the slit length was 14″ (∼240 pc). The spectral resolution was ∼74,000, unprecedentedly high for galactic nuclei observations at ∼2.1 μm. The line profiles appear highly complex, with blue asymmetry up to 3.″5 away of the IRC, and red asymmetries further away to northeast. Several Gaussian components are necessary to fit the profile, nevertheless a narrow and a wide one predominate. The IRC presents kinematic widths above 700 km s-1 (FWZI), and broad component FWHM ∼ 400 km s-1, the highest detected in a nearby galaxy. At the IRC, the blueshifted broad component displays a 90 km s-1 bump in radial velocity distribution, a feature we previously detected in molecular gas kinematics. The narrow component velocity dispersion (∼32 km s-1) is within the expected for normal galaxies and luminous infrared galaxies (LIRGs). Intermediate components (FWHM ∼ 150 km s-1, redshifted to the northeast, blueshifted to the southwest) appear at some positions, as well as weaker blue (-215 km s-1) and red line wings (+300 km s-1). The IRC depicts a large broad-versus-narrow line flux ratio (F(B)/F(N) ∼ 1.35), and the broad component seems only comparable with those observed at very high star-forming rate galaxies. The results indicate that the IRC would be the main source of the galactic winds originated in the central region of NGC 253.
Fil: Gunthardt, Guillermo Ivan. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina
Fil: Díaz, R. J.. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Gemini Observatory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Agüero, Maria Paz. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Gimeno, G.. Gemini Observatory; Estados Unidos
Fil: Dottori, H.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Camperi, Javier Antonio. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina
Materia
GALAXIES: INDIVIDUAL (NGC 253)
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: NUCLEI
INFRARED: GALAXIES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/131910
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/131910
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The nuclear source of the galactic wind in NGC 253Gunthardt, Guillermo IvanDíaz, R. J.Agüero, Maria PazGimeno, G.Dottori, H.Camperi, Javier AntonioGALAXIES: INDIVIDUAL (NGC 253)GALAXIES: KINEMATICS AND DYNAMICSGALAXIES: NUCLEIINFRARED: GALAXIEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present Brγ emission line kinematics of the nuclear region of NGC 253, recently known to host a strong galactic wind that limits the global star formation of the galaxy. We obtained high-resolution long-slit spectroscopic data with PHOENIX at Gemini South, positioning the slit on the nucleus infrared core (IRC), close to the nuclear disk major axis. The spatial resolution was 0.″35 (∼6 pc) and the slit length was 14″ (∼240 pc). The spectral resolution was ∼74,000, unprecedentedly high for galactic nuclei observations at ∼2.1 μm. The line profiles appear highly complex, with blue asymmetry up to 3.″5 away of the IRC, and red asymmetries further away to northeast. Several Gaussian components are necessary to fit the profile, nevertheless a narrow and a wide one predominate. The IRC presents kinematic widths above 700 km s-1 (FWZI), and broad component FWHM ∼ 400 km s-1, the highest detected in a nearby galaxy. At the IRC, the blueshifted broad component displays a 90 km s-1 bump in radial velocity distribution, a feature we previously detected in molecular gas kinematics. The narrow component velocity dispersion (∼32 km s-1) is within the expected for normal galaxies and luminous infrared galaxies (LIRGs). Intermediate components (FWHM ∼ 150 km s-1, redshifted to the northeast, blueshifted to the southwest) appear at some positions, as well as weaker blue (-215 km s-1) and red line wings (+300 km s-1). The IRC depicts a large broad-versus-narrow line flux ratio (F(B)/F(N) ∼ 1.35), and the broad component seems only comparable with those observed at very high star-forming rate galaxies. The results indicate that the IRC would be the main source of the galactic winds originated in the central region of NGC 253.Fil: Gunthardt, Guillermo Ivan. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; ArgentinaFil: Díaz, R. J.. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Gemini Observatory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Agüero, Maria Paz. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Gimeno, G.. Gemini Observatory; Estados UnidosFil: Dottori, H.. Universidade Federal do Rio Grande do Sul; BrasilFil: Camperi, Javier Antonio. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; ArgentinaIOP Publishing2019-08-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/131910Gunthardt, Guillermo Ivan; Díaz, R. J.; Agüero, Maria Paz; Gimeno, G.; Dottori, H.; et al.; The nuclear source of the galactic wind in NGC 253; IOP Publishing; Astronomical Journal; 158; 3; 19-8-2019; 1-90004-62561538-3881CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ab2f7cinfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ab2f7cinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1908.06538info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:45Zoai:ri.conicet.gov.ar:11336/131910instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:38:46.211CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The nuclear source of the galactic wind in NGC 253
title The nuclear source of the galactic wind in NGC 253
spellingShingle The nuclear source of the galactic wind in NGC 253
Gunthardt, Guillermo Ivan
GALAXIES: INDIVIDUAL (NGC 253)
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: NUCLEI
INFRARED: GALAXIES
title_short The nuclear source of the galactic wind in NGC 253
title_full The nuclear source of the galactic wind in NGC 253
title_fullStr The nuclear source of the galactic wind in NGC 253
title_full_unstemmed The nuclear source of the galactic wind in NGC 253
title_sort The nuclear source of the galactic wind in NGC 253
dc.creator.none.fl_str_mv Gunthardt, Guillermo Ivan
Díaz, R. J.
Agüero, Maria Paz
Gimeno, G.
Dottori, H.
Camperi, Javier Antonio
author Gunthardt, Guillermo Ivan
author_facet Gunthardt, Guillermo Ivan
Díaz, R. J.
Agüero, Maria Paz
Gimeno, G.
Dottori, H.
Camperi, Javier Antonio
author_role author
author2 Díaz, R. J.
Agüero, Maria Paz
Gimeno, G.
Dottori, H.
Camperi, Javier Antonio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: INDIVIDUAL (NGC 253)
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: NUCLEI
INFRARED: GALAXIES
topic GALAXIES: INDIVIDUAL (NGC 253)
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: NUCLEI
INFRARED: GALAXIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present Brγ emission line kinematics of the nuclear region of NGC 253, recently known to host a strong galactic wind that limits the global star formation of the galaxy. We obtained high-resolution long-slit spectroscopic data with PHOENIX at Gemini South, positioning the slit on the nucleus infrared core (IRC), close to the nuclear disk major axis. The spatial resolution was 0.″35 (∼6 pc) and the slit length was 14″ (∼240 pc). The spectral resolution was ∼74,000, unprecedentedly high for galactic nuclei observations at ∼2.1 μm. The line profiles appear highly complex, with blue asymmetry up to 3.″5 away of the IRC, and red asymmetries further away to northeast. Several Gaussian components are necessary to fit the profile, nevertheless a narrow and a wide one predominate. The IRC presents kinematic widths above 700 km s-1 (FWZI), and broad component FWHM ∼ 400 km s-1, the highest detected in a nearby galaxy. At the IRC, the blueshifted broad component displays a 90 km s-1 bump in radial velocity distribution, a feature we previously detected in molecular gas kinematics. The narrow component velocity dispersion (∼32 km s-1) is within the expected for normal galaxies and luminous infrared galaxies (LIRGs). Intermediate components (FWHM ∼ 150 km s-1, redshifted to the northeast, blueshifted to the southwest) appear at some positions, as well as weaker blue (-215 km s-1) and red line wings (+300 km s-1). The IRC depicts a large broad-versus-narrow line flux ratio (F(B)/F(N) ∼ 1.35), and the broad component seems only comparable with those observed at very high star-forming rate galaxies. The results indicate that the IRC would be the main source of the galactic winds originated in the central region of NGC 253.
Fil: Gunthardt, Guillermo Ivan. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina
Fil: Díaz, R. J.. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Gemini Observatory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Agüero, Maria Paz. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Gimeno, G.. Gemini Observatory; Estados Unidos
Fil: Dottori, H.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Camperi, Javier Antonio. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Medio Interest., Instument. y Galaxias; Argentina
description We present Brγ emission line kinematics of the nuclear region of NGC 253, recently known to host a strong galactic wind that limits the global star formation of the galaxy. We obtained high-resolution long-slit spectroscopic data with PHOENIX at Gemini South, positioning the slit on the nucleus infrared core (IRC), close to the nuclear disk major axis. The spatial resolution was 0.″35 (∼6 pc) and the slit length was 14″ (∼240 pc). The spectral resolution was ∼74,000, unprecedentedly high for galactic nuclei observations at ∼2.1 μm. The line profiles appear highly complex, with blue asymmetry up to 3.″5 away of the IRC, and red asymmetries further away to northeast. Several Gaussian components are necessary to fit the profile, nevertheless a narrow and a wide one predominate. The IRC presents kinematic widths above 700 km s-1 (FWZI), and broad component FWHM ∼ 400 km s-1, the highest detected in a nearby galaxy. At the IRC, the blueshifted broad component displays a 90 km s-1 bump in radial velocity distribution, a feature we previously detected in molecular gas kinematics. The narrow component velocity dispersion (∼32 km s-1) is within the expected for normal galaxies and luminous infrared galaxies (LIRGs). Intermediate components (FWHM ∼ 150 km s-1, redshifted to the northeast, blueshifted to the southwest) appear at some positions, as well as weaker blue (-215 km s-1) and red line wings (+300 km s-1). The IRC depicts a large broad-versus-narrow line flux ratio (F(B)/F(N) ∼ 1.35), and the broad component seems only comparable with those observed at very high star-forming rate galaxies. The results indicate that the IRC would be the main source of the galactic winds originated in the central region of NGC 253.
publishDate 2019
dc.date.none.fl_str_mv 2019-08-19
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/131910
Gunthardt, Guillermo Ivan; Díaz, R. J.; Agüero, Maria Paz; Gimeno, G.; Dottori, H.; et al.; The nuclear source of the galactic wind in NGC 253; IOP Publishing; Astronomical Journal; 158; 3; 19-8-2019; 1-9
0004-6256
1538-3881
CONICET Digital
CONICET
url http://hdl.handle.net/11336/131910
identifier_str_mv Gunthardt, Guillermo Ivan; Díaz, R. J.; Agüero, Maria Paz; Gimeno, G.; Dottori, H.; et al.; The nuclear source of the galactic wind in NGC 253; IOP Publishing; Astronomical Journal; 158; 3; 19-8-2019; 1-9
0004-6256
1538-3881
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ab2f7c
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ab2f7c
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1908.06538
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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