Orbital dynamics in realistic galaxy models: NGC 3726, NGC 3877 and NGC 4010
| Autor: | Sandra M. Martínez-Sicachá, Guillermo A. González, F. L. Dubeibe |
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| Přispěvatelé: | Academia Colombiana de Ciencias Exactas, Físicas y Naturales |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Dinámica estelar
Angular momentum General Mathematics General Physics and Astronomy FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Nonlinear dynamics and chaos 01 natural sciences General Biochemistry Genetics and Molecular Biology 010305 fluids & plasmas Cinemática y dinámica Radio telescope History and Philosophy of Science 0103 physical sciences Ursa Major Cluster 010303 astronomy & astrophysics Galaxy rotation curve Stellar dynamics Astrophysics::Galaxy Astrophysics Physics Galaxias Spiral galaxy cinemática y dinámica [Galaxias] kinematics and dynamics [Galaxies] Kinematics and dynamics General Chemistry Galaxies Nonlinear Sciences - Chaotic Dynamics Astrophysics - Astrophysics of Galaxies Galaxy Stars General Energy Astrophysics of Galaxies (astro-ph.GA) Dinámica no lineal y caos General Earth and Planetary Sciences Test particle Chaotic Dynamics (nlin.CD) General Agricultural and Biological Sciences |
| Zdroj: | Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, Volume: 43, Issue: 166, Pages: 24-30, Published: MAR 2019 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales |
| Popis: | In the present paper, using a generalization of the Miyamoto and Nagai potential we adjusted the observed rotation curves of three specific spiral galaxies to the analytical circular velocities. The observational data have been taken from a 21 cm-line synthesis imaging survey using the Westerbork Synthesis Radio Telescope, for three particular galaxies in the Ursa Major cluster: NGC 3726, NGC 3877 and NGC 4010. Accordingly, the dynamics of the system is analyzed in terms of the Poincar\'e sections method, finding that for larger values of the angular momentum of the test particle or lower values its total energy the dynamics is mainly regular, while on the opposite cases, the dynamics is mainly chaotic. Our toy model opens the possibility to find chaotic bounded orbits for stars in those particular galaxies. Comment: 7 pages, 9 figures |
| Databáze: | OpenAIRE |
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