Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839

Autores
Bosch, Guillermo Luis; Hägele, Guillermo Federico; Amorín, Ricardo; Firpo, Verónica; Cardaci, Monica Viviana
Año de publicación
2018
Idioma
español castellano
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
This work describes a new method for analysing Integral Field Spectroscopic observations of emission line spectra originated in star forming regions, considering the presence of multiple components in the line profile of different ions. Observations were carried out in queue mode using the GMOS attached to the Gemini North Telescope. To achieve this we built a Python code that analyses every individual spectrum of the data cube. Our code applies an iterative process that starts with a single Gaussian fit to each emission line profile starting from a single estimated average velocity of the galaxy. The output of this first approximation is used as the source for the second stage, where a second component is cloned from the first one and the fitting procedure is repeated with this new set of initial guesses. The new output is analysed to check whether there is an actual improvement in the fit from the previous model, using the Akaike Information Criterion indicator. For our GMOS spectra on SDSSJ0839, the largest meaningful number of components was found to be three for the brightest spaxels on the H line profile. The possibility of fitting multiple components to the H line profiles of the data cube allows to perform a much more detailed analysis of the gas kinematics, as the behaviour differs dramatically from what can be inferred from fitting a single Gaussian profile. We were also able to measure fluxes for [Nii], [Sii] among other forbidden lines. With these, we could estimate line ratios linked to temperature and density, even though the wavelength coverage does not allow to obtain values for these physical parameters directly. In this contribution we present the information that this kind of analysis provides on the ionised gas complex kinematics within a starburst galaxy.
Fil: Bosch, Guillermo Luis. 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
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
Fil: Amorín, Ricardo. Institute Of Astronomy; Reino Unido
Fil: Firpo, Verónica. Universidad de La Serena; Chile
Fil: Cardaci, Monica Viviana. 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
60a Reunión Anual de la Asociación Argentina de Astronomía
Malargüe
Argentina
Universidad Nacional de Río Negro
Instituto de Tecnologías en Detección y Astropartículas
Materia
GALAXIES: STARBURST
GALAXIES: KINEMATICS AND DYNAMICS
TECHNIQUES: IMAGING SPECTROSCOPY
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:11336/261348
Acceder
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spelling Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839Bosch, Guillermo LuisHägele, Guillermo FedericoAmorín, RicardoFirpo, VerónicaCardaci, Monica VivianaGALAXIES: STARBURSTGALAXIES: KINEMATICS AND DYNAMICSTECHNIQUES: IMAGING SPECTROSCOPYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1This work describes a new method for analysing Integral Field Spectroscopic observations of emission line spectra originated in star forming regions, considering the presence of multiple components in the line profile of different ions. Observations were carried out in queue mode using the GMOS attached to the Gemini North Telescope. To achieve this we built a Python code that analyses every individual spectrum of the data cube. Our code applies an iterative process that starts with a single Gaussian fit to each emission line profile starting from a single estimated average velocity of the galaxy. The output of this first approximation is used as the source for the second stage, where a second component is cloned from the first one and the fitting procedure is repeated with this new set of initial guesses. The new output is analysed to check whether there is an actual improvement in the fit from the previous model, using the Akaike Information Criterion indicator. For our GMOS spectra on SDSSJ0839, the largest meaningful number of components was found to be three for the brightest spaxels on the H line profile. The possibility of fitting multiple components to the H line profiles of the data cube allows to perform a much more detailed analysis of the gas kinematics, as the behaviour differs dramatically from what can be inferred from fitting a single Gaussian profile. We were also able to measure fluxes for [Nii], [Sii] among other forbidden lines. With these, we could estimate line ratios linked to temperature and density, even though the wavelength coverage does not allow to obtain values for these physical parameters directly. In this contribution we present the information that this kind of analysis provides on the ionised gas complex kinematics within a starburst galaxy.Fil: Bosch, Guillermo Luis. 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; ArgentinaFil: 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; ArgentinaFil: Amorín, Ricardo. Institute Of Astronomy; Reino UnidoFil: Firpo, Verónica. Universidad de La Serena; ChileFil: Cardaci, Monica Viviana. 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; Argentina60a Reunión Anual de la Asociación Argentina de AstronomíaMalargüeArgentinaUniversidad Nacional de Río NegroInstituto de Tecnologías en Detección y AstropartículasAsociación Argentina de AstronomíaBenaglia, Paula2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/261348Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839; 60a Reunión Anual de la Asociación Argentina de Astronomía; Malargüe; Argentina; 2017; 154-1560571-32851669-9521CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/http://www.astronomiaargentina.org.ar/uploads/docs/baaa_60.pdfNacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:22:48Zoai:ri.conicet.gov.ar:11336/261348instacron: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:34982025-10-22 11:22:48.368CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
title Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
spellingShingle Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
Bosch, Guillermo Luis
GALAXIES: STARBURST
GALAXIES: KINEMATICS AND DYNAMICS
TECHNIQUES: IMAGING SPECTROSCOPY
title_short Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
title_full Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
title_fullStr Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
title_full_unstemmed Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
title_sort Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839
dc.creator.none.fl_str_mv Bosch, Guillermo Luis
Hägele, Guillermo Federico
Amorín, Ricardo
Firpo, Verónica
Cardaci, Monica Viviana
author Bosch, Guillermo Luis
author_facet Bosch, Guillermo Luis
Hägele, Guillermo Federico
Amorín, Ricardo
Firpo, Verónica
Cardaci, Monica Viviana
author_role author
author2 Hägele, Guillermo Federico
Amorín, Ricardo
Firpo, Verónica
Cardaci, Monica Viviana
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Benaglia, Paula
dc.subject.none.fl_str_mv GALAXIES: STARBURST
GALAXIES: KINEMATICS AND DYNAMICS
TECHNIQUES: IMAGING SPECTROSCOPY
topic GALAXIES: STARBURST
GALAXIES: KINEMATICS AND DYNAMICS
TECHNIQUES: IMAGING SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This work describes a new method for analysing Integral Field Spectroscopic observations of emission line spectra originated in star forming regions, considering the presence of multiple components in the line profile of different ions. Observations were carried out in queue mode using the GMOS attached to the Gemini North Telescope. To achieve this we built a Python code that analyses every individual spectrum of the data cube. Our code applies an iterative process that starts with a single Gaussian fit to each emission line profile starting from a single estimated average velocity of the galaxy. The output of this first approximation is used as the source for the second stage, where a second component is cloned from the first one and the fitting procedure is repeated with this new set of initial guesses. The new output is analysed to check whether there is an actual improvement in the fit from the previous model, using the Akaike Information Criterion indicator. For our GMOS spectra on SDSSJ0839, the largest meaningful number of components was found to be three for the brightest spaxels on the H line profile. The possibility of fitting multiple components to the H line profiles of the data cube allows to perform a much more detailed analysis of the gas kinematics, as the behaviour differs dramatically from what can be inferred from fitting a single Gaussian profile. We were also able to measure fluxes for [Nii], [Sii] among other forbidden lines. With these, we could estimate line ratios linked to temperature and density, even though the wavelength coverage does not allow to obtain values for these physical parameters directly. In this contribution we present the information that this kind of analysis provides on the ionised gas complex kinematics within a starburst galaxy.
Fil: Bosch, Guillermo Luis. 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
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
Fil: Amorín, Ricardo. Institute Of Astronomy; Reino Unido
Fil: Firpo, Verónica. Universidad de La Serena; Chile
Fil: Cardaci, Monica Viviana. 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
60a Reunión Anual de la Asociación Argentina de Astronomía
Malargüe
Argentina
Universidad Nacional de Río Negro
Instituto de Tecnologías en Detección y Astropartículas
description This work describes a new method for analysing Integral Field Spectroscopic observations of emission line spectra originated in star forming regions, considering the presence of multiple components in the line profile of different ions. Observations were carried out in queue mode using the GMOS attached to the Gemini North Telescope. To achieve this we built a Python code that analyses every individual spectrum of the data cube. Our code applies an iterative process that starts with a single Gaussian fit to each emission line profile starting from a single estimated average velocity of the galaxy. The output of this first approximation is used as the source for the second stage, where a second component is cloned from the first one and the fitting procedure is repeated with this new set of initial guesses. The new output is analysed to check whether there is an actual improvement in the fit from the previous model, using the Akaike Information Criterion indicator. For our GMOS spectra on SDSSJ0839, the largest meaningful number of components was found to be three for the brightest spaxels on the H line profile. The possibility of fitting multiple components to the H line profiles of the data cube allows to perform a much more detailed analysis of the gas kinematics, as the behaviour differs dramatically from what can be inferred from fitting a single Gaussian profile. We were also able to measure fluxes for [Nii], [Sii] among other forbidden lines. With these, we could estimate line ratios linked to temperature and density, even though the wavelength coverage does not allow to obtain values for these physical parameters directly. In this contribution we present the information that this kind of analysis provides on the ionised gas complex kinematics within a starburst galaxy.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
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http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/261348
Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839; 60a Reunión Anual de la Asociación Argentina de Astronomía; Malargüe; Argentina; 2017; 154-156
0571-3285
1669-9521
CONICET Digital
CONICET
url http://hdl.handle.net/11336/261348
identifier_str_mv Análisis cinemático con GMOS IFU en galaxias de formación estelar violenta: SDSSJ0839; 60a Reunión Anual de la Asociación Argentina de Astronomía; Malargüe; Argentina; 2017; 154-156
0571-3285
1669-9521
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.astronomiaargentina.org.ar/uploads/docs/baaa_60.pdf
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application/pdf
application/pdf
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dc.coverage.none.fl_str_mv Nacional
dc.publisher.none.fl_str_mv Asociación Argentina de Astronomía
publisher.none.fl_str_mv Asociación Argentina de Astronomía
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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