Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density
- Autores
- Krabbe, A. C.; Rosa, D. A.; Dors, O. L.; Pastoriza, M. G.; Winge, C.; Hägele, Guillermo Federico; Cardaci, Mónica Viviana; Rodrigues, I.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400-7300 Å, obtained with the Gemini Multi-Object Spectrograph at Gemini South (GMOS-S). The electron density was determined using the ratio of emission lines [S II] λ6716/λ6731. Our results indicate that the electron density estimates obtained of HII regions from our sample of interacting galaxies are systematically higher than those derived for isolated galaxies. The mean electron density values of interacting galaxies are in the range of Ne = 24-532 cm-3, while those obtained for isolated galaxies are in the range of Ne =40-137 cm-3.Comparing the observed emission lines with predictions of photoionization models, we verified that almost all the HII regions of the galaxies AM 1054A, AM 2058B and AM 2306B have emission lines excited by shock gas. For the remaining galaxies, only few H II regions have emission lines excited by shocks, such as in AM 2322B (one point) and AM 2322A (four points). No correlation is obtained between the presence of shocks and electron densities. Indeed, the highest electron density values found in our sample do not belong to the objects with gas shock excitation. We emphasize the importance of considering these quantities especially when the metallicity is derived for these types of systems.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Galaxies:General
Galaxies:Interactions
Galaxies:ISM - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85272
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Interaction effects on galaxy pairs with gemini/GMOS-I: Electron densityKrabbe, A. C.Rosa, D. A.Dors, O. L.Pastoriza, M. G.Winge, C.Hägele, Guillermo FedericoCardaci, Mónica VivianaRodrigues, I.Ciencias AstronómicasGalaxies:GeneralGalaxies:InteractionsGalaxies:ISMWe present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400-7300 Å, obtained with the Gemini Multi-Object Spectrograph at Gemini South (GMOS-S). The electron density was determined using the ratio of emission lines [S II] λ6716/λ6731. Our results indicate that the electron density estimates obtained of HII regions from our sample of interacting galaxies are systematically higher than those derived for isolated galaxies. The mean electron density values of interacting galaxies are in the range of N<SUB>e</SUB> = 24-532 cm<SUP>-3</SUP>, while those obtained for isolated galaxies are in the range of N<SUB>e</SUB> =40-137 cm<SUP>-3</SUP>.Comparing the observed emission lines with predictions of photoionization models, we verified that almost all the HII regions of the galaxies AM 1054A, AM 2058B and AM 2306B have emission lines excited by shock gas. For the remaining galaxies, only few H II regions have emission lines excited by shocks, such as in AM 2322B (one point) and AM 2322A (four points). No correlation is obtained between the presence of shocks and electron densities. Indeed, the highest electron density values found in our sample do not belong to the objects with gas shock excitation. We emphasize the importance of considering these quantities especially when the metallicity is derived for these types of systems.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1155-1170http://sedici.unlp.edu.ar/handle/10915/85272enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt1913info:eu-repo/semantics/reference/hdl/10915/127166info:eu-repo/semantics/reference/hdl/10915/125245info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:29Zoai:sedici.unlp.edu.ar:10915/85272Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:30.12SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
title |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
spellingShingle |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density Krabbe, A. C. Ciencias Astronómicas Galaxies:General Galaxies:Interactions Galaxies:ISM |
title_short |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
title_full |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
title_fullStr |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
title_full_unstemmed |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
title_sort |
Interaction effects on galaxy pairs with gemini/GMOS-I: Electron density |
dc.creator.none.fl_str_mv |
Krabbe, A. C. Rosa, D. A. Dors, O. L. Pastoriza, M. G. Winge, C. Hägele, Guillermo Federico Cardaci, Mónica Viviana Rodrigues, I. |
author |
Krabbe, A. C. |
author_facet |
Krabbe, A. C. Rosa, D. A. Dors, O. L. Pastoriza, M. G. Winge, C. Hägele, Guillermo Federico Cardaci, Mónica Viviana Rodrigues, I. |
author_role |
author |
author2 |
Rosa, D. A. Dors, O. L. Pastoriza, M. G. Winge, C. Hägele, Guillermo Federico Cardaci, Mónica Viviana Rodrigues, I. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Galaxies:General Galaxies:Interactions Galaxies:ISM |
topic |
Ciencias Astronómicas Galaxies:General Galaxies:Interactions Galaxies:ISM |
dc.description.none.fl_txt_mv |
We present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400-7300 Å, obtained with the Gemini Multi-Object Spectrograph at Gemini South (GMOS-S). The electron density was determined using the ratio of emission lines [S II] λ6716/λ6731. Our results indicate that the electron density estimates obtained of HII regions from our sample of interacting galaxies are systematically higher than those derived for isolated galaxies. The mean electron density values of interacting galaxies are in the range of N<SUB>e</SUB> = 24-532 cm<SUP>-3</SUP>, while those obtained for isolated galaxies are in the range of N<SUB>e</SUB> =40-137 cm<SUP>-3</SUP>.Comparing the observed emission lines with predictions of photoionization models, we verified that almost all the HII regions of the galaxies AM 1054A, AM 2058B and AM 2306B have emission lines excited by shock gas. For the remaining galaxies, only few H II regions have emission lines excited by shocks, such as in AM 2322B (one point) and AM 2322A (four points). No correlation is obtained between the presence of shocks and electron densities. Indeed, the highest electron density values found in our sample do not belong to the objects with gas shock excitation. We emphasize the importance of considering these quantities especially when the metallicity is derived for these types of systems. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
description |
We present an observational study about the impacts of the interactions on the electron density of HII regions located in seven systems of interacting galaxies. The data consist of long-slit spectra in the range 4400-7300 Å, obtained with the Gemini Multi-Object Spectrograph at Gemini South (GMOS-S). The electron density was determined using the ratio of emission lines [S II] λ6716/λ6731. Our results indicate that the electron density estimates obtained of HII regions from our sample of interacting galaxies are systematically higher than those derived for isolated galaxies. The mean electron density values of interacting galaxies are in the range of N<SUB>e</SUB> = 24-532 cm<SUP>-3</SUP>, while those obtained for isolated galaxies are in the range of N<SUB>e</SUB> =40-137 cm<SUP>-3</SUP>.Comparing the observed emission lines with predictions of photoionization models, we verified that almost all the HII regions of the galaxies AM 1054A, AM 2058B and AM 2306B have emission lines excited by shock gas. For the remaining galaxies, only few H II regions have emission lines excited by shocks, such as in AM 2322B (one point) and AM 2322A (four points). No correlation is obtained between the presence of shocks and electron densities. Indeed, the highest electron density values found in our sample do not belong to the objects with gas shock excitation. We emphasize the importance of considering these quantities especially when the metallicity is derived for these types of systems. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/85272 |
url |
http://sedici.unlp.edu.ar/handle/10915/85272 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0035-8711 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt1913 info:eu-repo/semantics/reference/hdl/10915/127166 info:eu-repo/semantics/reference/hdl/10915/125245 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 1155-1170 |
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