125 citations · 819 across the 25 of their papers we have counts for
7 papers · 1 filter
Orbits of globular clusters computed with dynamical friction in the Galactic anisotropic velocity dispersion field
Edmundo Moreno, José G. Fernández-Trincado, Angeles Pérez-Villegas +2
We present a preliminary analysis of the effect of dynamical friction on the orbits of part of the globular clusters in our Galaxy. Our study considers an anisotropic velocity disp…
Precise distances from OGLE-IV member RR Lyrae stars in six bulge globular clusters
R. A. P. Oliveira, S. Ortolani, B. Barbuy +6
Context. RR Lyrae stars are useful standard candles allowing one to derive accurate distances for old star clusters. Based on the recent catalogues from OGLE-IV and Gaia Early Data…
Kinematic footprint of the Milky Way spiral arms in Gaia EDR3
Luis Martinez-Medina, Angeles Pérez-Villegas, Antonio Peimbert
The Milky Way spiral arms are well established from star counts as well as from the locus of molecular clouds and other young objects, however, they have only recently started to b…
Photo-chemo-dynamical analysis and the origin of the bulge globular cluster Palomar 6
Stefano O. Souza, Marica Valentini, Beatriz Barbuy +7
Palomar 6 (Pal~6) is a moderately metal-poor globular cluster projected towards the Galactic bulge. A full analysis of the cluster can give hints on the early chemical enrichment o…
Dynamics of the spiral-arm corotation and its observable footprints in the Solar Neighborhood
Douglas A. Barros, Angeles Pérez-Villegas, Tatiana A. Michtchenko +1
This article discusses the effects of the spiral-arm corotation on the stellar dynamics in the Solar Neighborhood (SN). All our results presented here rely on: 1) observational evi…
Gemini/Phoenix H-band analysis of the globular cluster AL3
B. Barbuy, H. Ernandes, S. O. Souza +9
The globular cluster AL~3 is old and located in the inner bulge. Three individual stars were observed with the Phoenix spectrograph at the Gemini South telescope. The wavelength re…
APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge
José G. Fernández-Trincado, Timothy C. Beers, Dante Minniti +26
The central (`bulge') region of the Milky Way is teeming with a significant fraction of mildly metal-deficient stars with atmospheres that are strongly enriched in cyanogen ($^{12}…