Complex gas kinematics in compact, rapidly assembling star-forming galaxies

Autores
Amorín, R.; Vílchez, J. M.; Hägele, Guillermo Federico; Firpo, Verónica; Pérez Montero, E.; Papaderos, P.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Deep, high-resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z ∼ 0.1–0.3, most of them also known as green peas. Remarkably, these galaxies show complex emission-line profiles in the spectral region including Hα, [N ii] λλ6548, 6584, and [S ii] λλ6717, 6731, consisting of the superposition of different kinematical components on a spatial extent of few kiloparsecs: a very broad line emission underlying more than one narrower component. For at least two of the observed galaxies some of these multiple components are resolved spatially in their two-dimensional spectra, whereas for another one a faint detached Hα blob lacking stellar continuum is detected at the same recessional velocity ∼7 kpc away from the galaxy. The individual narrower Hα components show high intrinsic velocity dispersion (σ ∼ 30–80 km s−1), suggesting together with unsharped masking Hubble Space Telescope images that star formation proceeds in an ensemble of several compact and turbulent clumps, with relative velocities of up to ∼500 km s−1. The broad underlying Hα components indicate in all cases large expansion velocities (full width zero intensity ⩾1000 km s−1) and very high luminosities (up to ∼1042 erg s−1), probably showing the imprint of energetic outflows from supernovae. These intriguing results underline the importance of green peas for studying the assembly of low-mass galaxies near and far.
Fil: Amorín, R.. Consejo Superior de Investigaciones Científicas; España
Fil: Vílchez, J. M.. Consejo Superior de Investigaciones Científicas; España
Fil: Hägele, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Firpo, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Pérez Montero, E.. Consejo Superior de Investigaciones Científicas; España
Fil: Papaderos, P.. Universidad de Porto; Portugal
Materia
Galaxies: dwarf
Galaxies: evolution
Galaxies: kinematics and dynamics
Galaxies: starburst
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:11336/273224
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Complex gas kinematics in compact, rapidly assembling star-forming galaxiesAmorín, R.Vílchez, J. M.Hägele, Guillermo FedericoFirpo, VerónicaPérez Montero, E.Papaderos, P.Galaxies: dwarfGalaxies: evolutionGalaxies: kinematics and dynamicsGalaxies: starbursthttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Deep, high-resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z ∼ 0.1–0.3, most of them also known as green peas. Remarkably, these galaxies show complex emission-line profiles in the spectral region including Hα, [N ii] λλ6548, 6584, and [S ii] λλ6717, 6731, consisting of the superposition of different kinematical components on a spatial extent of few kiloparsecs: a very broad line emission underlying more than one narrower component. For at least two of the observed galaxies some of these multiple components are resolved spatially in their two-dimensional spectra, whereas for another one a faint detached Hα blob lacking stellar continuum is detected at the same recessional velocity ∼7 kpc away from the galaxy. The individual narrower Hα components show high intrinsic velocity dispersion (σ ∼ 30–80 km s−1), suggesting together with unsharped masking Hubble Space Telescope images that star formation proceeds in an ensemble of several compact and turbulent clumps, with relative velocities of up to ∼500 km s−1. The broad underlying Hα components indicate in all cases large expansion velocities (full width zero intensity ⩾1000 km s−1) and very high luminosities (up to ∼1042 erg s−1), probably showing the imprint of energetic outflows from supernovae. These intriguing results underline the importance of green peas for studying the assembly of low-mass galaxies near and far.Fil: Amorín, R.. Consejo Superior de Investigaciones Científicas; EspañaFil: Vílchez, J. M.. Consejo Superior de Investigaciones Científicas; EspañaFil: Hägele, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Firpo, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Pérez Montero, E.. Consejo Superior de Investigaciones Científicas; EspañaFil: Papaderos, P.. Universidad de Porto; PortugalIOP Publishing2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273224Amorín, R.; Vílchez, J. M.; Hägele, Guillermo Federico; Firpo, Verónica; Pérez Montero, E.; et al.; Complex gas kinematics in compact, rapidly assembling star-forming galaxies; IOP Publishing; The Astrophysical Journal; 754; 2; 6-2012; 1-60004-637X2041-8213CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/2041-8205/754/2/L22info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/754/2/L22info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:20:37Zoai:ri.conicet.gov.ar:11336/273224instacron: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:34982025-10-15 14:20:37.682CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Complex gas kinematics in compact, rapidly assembling star-forming galaxies
title Complex gas kinematics in compact, rapidly assembling star-forming galaxies
spellingShingle Complex gas kinematics in compact, rapidly assembling star-forming galaxies
Amorín, R.
Galaxies: dwarf
Galaxies: evolution
Galaxies: kinematics and dynamics
Galaxies: starburst
title_short Complex gas kinematics in compact, rapidly assembling star-forming galaxies
title_full Complex gas kinematics in compact, rapidly assembling star-forming galaxies
title_fullStr Complex gas kinematics in compact, rapidly assembling star-forming galaxies
title_full_unstemmed Complex gas kinematics in compact, rapidly assembling star-forming galaxies
title_sort Complex gas kinematics in compact, rapidly assembling star-forming galaxies
dc.creator.none.fl_str_mv Amorín, R.
Vílchez, J. M.
Hägele, Guillermo Federico
Firpo, Verónica
Pérez Montero, E.
Papaderos, P.
author Amorín, R.
author_facet Amorín, R.
Vílchez, J. M.
Hägele, Guillermo Federico
Firpo, Verónica
Pérez Montero, E.
Papaderos, P.
author_role author
author2 Vílchez, J. M.
Hägele, Guillermo Federico
Firpo, Verónica
Pérez Montero, E.
Papaderos, P.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Galaxies: dwarf
Galaxies: evolution
Galaxies: kinematics and dynamics
Galaxies: starburst
topic Galaxies: dwarf
Galaxies: evolution
Galaxies: kinematics and dynamics
Galaxies: starburst
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Deep, high-resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z ∼ 0.1–0.3, most of them also known as green peas. Remarkably, these galaxies show complex emission-line profiles in the spectral region including Hα, [N ii] λλ6548, 6584, and [S ii] λλ6717, 6731, consisting of the superposition of different kinematical components on a spatial extent of few kiloparsecs: a very broad line emission underlying more than one narrower component. For at least two of the observed galaxies some of these multiple components are resolved spatially in their two-dimensional spectra, whereas for another one a faint detached Hα blob lacking stellar continuum is detected at the same recessional velocity ∼7 kpc away from the galaxy. The individual narrower Hα components show high intrinsic velocity dispersion (σ ∼ 30–80 km s−1), suggesting together with unsharped masking Hubble Space Telescope images that star formation proceeds in an ensemble of several compact and turbulent clumps, with relative velocities of up to ∼500 km s−1. The broad underlying Hα components indicate in all cases large expansion velocities (full width zero intensity ⩾1000 km s−1) and very high luminosities (up to ∼1042 erg s−1), probably showing the imprint of energetic outflows from supernovae. These intriguing results underline the importance of green peas for studying the assembly of low-mass galaxies near and far.
Fil: Amorín, R.. Consejo Superior de Investigaciones Científicas; España
Fil: Vílchez, J. M.. Consejo Superior de Investigaciones Científicas; España
Fil: Hägele, Guillermo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Firpo, Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Pérez Montero, E.. Consejo Superior de Investigaciones Científicas; España
Fil: Papaderos, P.. Universidad de Porto; Portugal
description Deep, high-resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z ∼ 0.1–0.3, most of them also known as green peas. Remarkably, these galaxies show complex emission-line profiles in the spectral region including Hα, [N ii] λλ6548, 6584, and [S ii] λλ6717, 6731, consisting of the superposition of different kinematical components on a spatial extent of few kiloparsecs: a very broad line emission underlying more than one narrower component. For at least two of the observed galaxies some of these multiple components are resolved spatially in their two-dimensional spectra, whereas for another one a faint detached Hα blob lacking stellar continuum is detected at the same recessional velocity ∼7 kpc away from the galaxy. The individual narrower Hα components show high intrinsic velocity dispersion (σ ∼ 30–80 km s−1), suggesting together with unsharped masking Hubble Space Telescope images that star formation proceeds in an ensemble of several compact and turbulent clumps, with relative velocities of up to ∼500 km s−1. The broad underlying Hα components indicate in all cases large expansion velocities (full width zero intensity ⩾1000 km s−1) and very high luminosities (up to ∼1042 erg s−1), probably showing the imprint of energetic outflows from supernovae. These intriguing results underline the importance of green peas for studying the assembly of low-mass galaxies near and far.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/273224
Amorín, R.; Vílchez, J. M.; Hägele, Guillermo Federico; Firpo, Verónica; Pérez Montero, E.; et al.; Complex gas kinematics in compact, rapidly assembling star-forming galaxies; IOP Publishing; The Astrophysical Journal; 754; 2; 6-2012; 1-6
0004-637X
2041-8213
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273224
identifier_str_mv Amorín, R.; Vílchez, J. M.; Hägele, Guillermo Federico; Firpo, Verónica; Pérez Montero, E.; et al.; Complex gas kinematics in compact, rapidly assembling star-forming galaxies; IOP Publishing; The Astrophysical Journal; 754; 2; 6-2012; 1-6
0004-637X
2041-8213
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/2041-8205/754/2/L22
info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/754/2/L22
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
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 13.22299

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