99 citations · 185 across the 8 of their papers we have counts for
8 papers
On the Survival of High-Altitude Open Clusters within the Milky Way Galaxy Tides
L. A. Martinez-Medina, B. Pichardo, A. Peimbert +1
It is a common assumption that high-altitude open clusters live longer compared with clusters moving close to the Galactic plane. This is because at high altitudes, open clusters a…
Close encounters involving RAVE stars beyond the 47 Tucanae tidal radius
J. G. Fernández-Trincado, A. C. Robin, C. Reylé +5
The most accurate 6D phase-space information from the Radial Velocity Experiment (RAVE) was used to integrate the orbits of 105 stars around the galactic globular cluster 47 Tucana…
Revealing the spiral arms through radial migration and the shape of the Metallicity Distribution Function
L. A. Martinez-Medina, B. Pichardo, E. Moreno +1
Recent observations show that the Milky Way's metallicity distribution function (MDF) changes its shape as a function of radius. This new evidence of radial migration within the st…
Stellar Orbital Studies in Normal Spiral Galaxies II: Restrictions to Structural and Dynamical parameters on Spiral Arms
Angeles Pérez-Villegas, Bárbara Pichardo, Edmundo Moreno
Making use of a set of detailed potential models for normal spiral galaxies, we analyze the disk stellar orbital dynamics as the structural and dynamical parameters of the spiral a…
Stellar Orbital Studies in Normal Spiral Galaxies I: Restrictions to the Pitch Angle
A. Pérez-Villegas, B. Pichardo, E. Moreno
We built a family of non-axisymmetric potential models for normal non-barred or weakly-barred spiral galaxies as defined in the simplest classification of galaxies: the Hubble sequ…
Pitch Angle Restrictions in Late Type Spiral Galaxies Based on Chaotic and Ordered Orbital Behavior
Angeles Perez-Villegas, Barbara Pichardo, Edmundo Moreno +2
We built models for low bulge mass spiral galaxies (late type as defined by the Hubble classification) using a 3-D self-gravitating model for spiral arms, and analyzed the orbital…
Stellar Kinematic Constraints on Galactic Structure Models Revisited: Bar and Spiral Arm Resonances
T. Antoja, O. Valenzuela, B. Pichardo +3
We study the phase space available to the local stellar distribution using a Galactic potential consistent with several recent observational constraints. We find that the induced p…
The Remarkable Central Structure of the Barred Galaxy NGC 1415
J. A. Garcia-Barreto, E. Moreno
A remarkable structure is observed in the innermost regions of the barred galaxy NGC 1415 : a small stellar bar, bright circumnuclear ionized gas seen in Halpha, two bright ionized…