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dc.contributor.author | Daza, J. Alejandro | - |
dc.contributor.author | Portilla, J. Gregorio | - |
dc.date.accessioned | 2022-11-01T01:30:22Z | - |
dc.date.available | 2022-11-01T01:30:22Z | - |
dc.date.issued | 2021-09-16 | - |
dc.identifier.issn | 0370-3908 | spa |
dc.identifier.uri | https://repositorio.accefyn.org.co/handle/001/1983 | - |
dc.description.abstract | Recent studies indicate that the region of emission of coronal lines observed in some active galactic nuclei is located in the internal face of the obscurant toroid; however, there are numerous examples of Seyfert 2 galaxies with significant coronal emission. To clarify this anomaly, here we give some insights about the location of the coronal line region (CLR) and determine the physical conditions of the coronal gas in this type of galaxies. We executed a SQL query in the Sloan Digital Sky Survey (SDSS-DR14) database to select various Seyfert 2 galaxies under the following criteria: 3<[O III] λ5007/Hβ<16, 0.5<[N II] λ6584/Hα<2, 0.3<([S II] λ6717+ λ6731)/Hα<0.6, 0.06<[O I] λ6300/Hα<0.2 and 0.02< z <0.13. This procedure yielded 497 Seyfert 2 galaxies. From these, the simultaneous emission of the four optical forbidden lines of [Fe VII] λλλλ6087, 5721, 5158, 3759 was found only in 10 objects. Flux ratios of these four lines enable to set ranges of density (Ne) and electronic temperature (Te) of the CLR through two ways allowing for a better approximation to these values. We found a correlation between the Narrow Line Region (NLR) and the CLR temperatures suggesting some kind of physical connection between the two zones for this type of objects when we compared these values with those from NLR. | eng |
dc.description.abstract | En estudios recientes se ha evidenciado que la región de emisión de líneas coronales observada en algunos núcleos galácticos activos está localizada en la cara interna del toroide oscurecedor; sin embargo, hay numerosos ejemplos de galaxias Seyfert 2 con significativa emisión coronal. Para aclarar esta anomalía, en el presente trabajo nos propusimos ofrecer algunas ideas sobre la ubicación espacial de la región de líneas coronales (RLC) en galaxias de tipo Seyfert 2, así como determinar las condiciones físicas del gas coronal para este tipo de galaxias. Para ello se ejecutó una rutina en SQL en la base de datos del Sloan Digital Sky Survey (SDSS-DR14) con el propósito de seleccionar varias galaxias de tipo Seyfert 2 bajo los siguientes criterios: 3<[O III] λ5007/ Hβ<16, 0.5 <[N II] λ6584/Hα<2, 0.3<([S II] λ6717+λ6731)/Hα<0.6, 0.06<[O I] λ6300/Hα<0.2 y 0.02 < z < 0.13. El procedimiento arrojó 497 galaxias Seyfert 2. De esta muestra, se detectó emisión simultánea en las cuatro líneas prohibidas de alta ionización del [Fe VII] λλλλ6087, 5721, 5158, 3759 en 10 objetos. A partir de las relaciones de flujo de esas cuatro líneas se establecieron los rangos de densidad y temperatura electrónica de la región de emisión por dos vías, lo que permitió un acotamiento más aproximado de tales valores. Al compararlos con los obtenidos para la región de líneas delgadas (RLD), se encontró una correlación entre las temperaturas de la RLC y la RLD, lo que sugiere algún tipo de conexión física entre ambas zonas de este tipo de objetos. | spa |
dc.format.mimetype | application/pdf | spa |
dc.language.iso | eng | spa |
dc.publisher | Academia Colombiana de Ciencias Exactas, Físicas y Naturales | spa |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-sa/4.0/ | spa |
dc.title | Condiciones físicas de la región de líneas coronales en las galaxias Seyfert 2 | spa |
dc.title | Physical conditions of the coronal line region in Seyfert 2 galaxies | eng |
dc.type | Artículo de revista | spa |
dcterms.audience | Estudiantes,Profesores,Comunidad cientifica | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.type.driver | info:eu-repo/semantics/article | spa |
dc.type.version | info:eu-repo/semantics/updatedVersion | spa |
dc.rights.creativecommons | Atribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0) | spa |
dc.identifier.doi | https://doi.org/10.18257/raccefyn.1346 | - |
dc.subject.proposal | AGN | eng |
dc.subject.proposal | Núcleo activo galáctico | spa |
dc.subject.proposal | Seyfert 2 galaxies | eng |
dc.subject.proposal | Galaxias Seyfert 2 | spa |
dc.subject.proposal | Coronal lines | eng |
dc.subject.proposal | Líneas coronales | spa |
dc.subject.proposal | Photoionization | eng |
dc.subject.proposal | Fotoionización. | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | spa |
dc.relation.ispartofjournal | Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales | spa |
dc.relation.citationvolume | 45 | spa |
dc.relation.citationstartpage | 697 | spa |
dc.relation.citationendpage | 708 | spa |
dc.contributor.corporatename | Academia Colombiana de Ciencias Exactas, Fisicas y Naturales | spa |
dc.identifier.eissn | 2382-4980 | spa |
dc.relation.citationissue | 176 | spa |
dc.type.content | Text | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/ART | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | spa |
Appears in Collections: | BA. Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales |
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