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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/261348
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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 Técnicas2025-09-29T09:53:26Zoai: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:34982025-09-29 09:53:26.576CONICET 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 Journal 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 |
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language |
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info:eu-repo/semantics/altIdentifier/url/http://www.astronomiaargentina.org.ar/uploads/docs/baaa_60.pdf |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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Asociación Argentina de Astronomía |
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Asociación Argentina de Astronomía |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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