A dynamical model for the spiral galaxy ngc 3359
In this work we have determined a dynamical model for NGC 3359. This isa strongly barred spiral galaxy with a complex structure, within which we can seean annular zone of intense star formation. In this work we present self consistentnumerical simulations of molecular gas in NGC 3359; and using the...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57144105 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57144105 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas galaxies: individual (NGC 3359) galaxies: kinematics and dynamics galaxies: spiral |
| Sumario: | In this work we have determined a dynamical model for NGC 3359. This isa strongly barred spiral galaxy with a complex structure, within which we can seean annular zone of intense star formation. In this work we present self consistentnumerical simulations of molecular gas in NGC 3359; and using the potential derivedfrom an I band image, we attempt to find the parameters responsible for thekinematics and morphology of the observed gas. The best results are obtained fora two pattern speed model: the central region (up to 15´´) corresponding to thenuclear bar which rotates with a Ωs=100 km s−1 kpc−1; and the main bar + outerspiral, decoupled from the nuclear region, which rotates with a angular velocity, Ωp= 27 km s−1 kpc−1. The model successfully reproduces the complex structure inHα of the galaxy in the internal 20´´ zone, which cannot really be explained with aunique mode pattern. |
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