40 citations · 113 across the 7 of their papers we have counts for
3 papers · 1 filter
A Galactic Ring of Minimum Stellar Density Near the Solar Orbit Radius
Douglas A. Barros, Jacques R. D. Lépine, Thiago C. Junqueira
We analyse the secular effects of a long-lived Galactic spiral structure on the stellar orbits with mean radii close to the corotation resonance. By test-particle simulations and d…
Bimodal chemical evolution of the Galactic disk and the Barium abundance of Cepheids
Jacques R. D. Lepine, Sergei Andrievky, Douglas A. Barros +2
In order to understand the Barium abundance distribution in the Galactic disk based on Cepheids, one must first be aware of important effects of the corotation resonance, situated…
A new model for gravitational potential perturbations in disks of spiral galaxies. An application to our Galaxy
T. C. Junqueira, J. R. D. Lépine, C. A. S. Braga +1
We propose a new, more realistic, description of the perturbed gravitational potential of spiral galaxies, with spiral arms having Gaussian-shaped groove profiles. We investigate t…