• Eccentricity samples: implications on the potential and the velocity distribution 

      Cubarsí Morera, Rafael; Stojanovic, Milan; Ninkovic, Slobodan (2017)
      Article
      Accés obert
      Planar and vertical epicycle frequencies and local angular velocity are related to the derivatives up to the second order of the local potential and can be used to test the shape of the potential from stellar disc samples. ...
    • Formation of asymmetric arms in barred galaxies 

      Sánchez Martín, Patricia; García Gómez, Carles; Masdemont Soler, Josep; Romero Gómez, Merce (Oxford University Press, 2023-04-01)
      Article
      Accés obert
      We establish a dynamical mechanism to explain the origin of the asymmetry between the arms observed in some barred disc galaxies, where one of the two arms emanating from the bar ends is very well defined, while the second ...
    • From manifolds to Lagrangian coherent structures in galactic bar models 

      Sánchez Martín, Patricia; Masdemont Soler, Josep; Romero Gómez, Merce (EDP Sciences, 2018-10-16)
      Article
      Accés obert
      We study the dynamics near the unstable Lagrangian points in galactic bar models using dynamical system tools in order to determine the global morphology of a barred galaxy. We aim at the case of non-autonomous models, in ...
    • Warp evidence in precessing galactic bar models 

      Sanchez Martin, P; Romero Gómez, Mercè; Masdemont Soler, Josep (EDP Sciences, 2016-04-01)
      Article
      Accés obert
      Most galaxies have a warped shape when they are seen edge-on. The reason for this curious form is not completely known so far, so in this work we apply dynamical system tools to contribute to its explanation. Starting from ...