119 citations · 715 across the 20 of their papers we have counts for
21 papers
Exploring the survivability of higher-order multiple protostellar systems -- The case of VLA1623
N. M. Murillo, A. Pérez-Villegas
Higher-order protostellar systems (3 components) are commonly observed in the early stages of low-mass star formation. A persistent question in star formation and evolution i…
The SDSS-Gaia View of the Color-Magnitude Relation for Blue Horizontal-branch Stars
Fabrícia O. Barbosa, Rafael M. Santucci, Silvia Rossi +3
We present an updated sample of blue horizontal-branch (BHB) stars selected from the photometric and spectroscopic data from Sloan Digital Sky Survey and its associated project Slo…
Abundance analysis of APOGEE spectra for 58 metal-poor stars from the bulge spheroid
R. Razera, B. Barbuy, T. C. Moura +19
The central part of the Galaxy host a multitude of stellar populations, including the spheroidal bulge stars, stars moved to the bulge through secular evolution of the bar, inner h…
The Unmixed Debris of Gaia-Sausage/Enceladus in the Form of a Pair of Halo Stellar Overdensities
Hélio D. Perottoni, Guilherme Limberg, João A. S. Amarante +5
In the first billion years after its formation, the Galaxy underwent several mergers with dwarf satellites of various masses. The debris of Gaia-Sausage/Enceladus (GSE), the galaxy…
Effect of orbital trapping by bar resonances in the local U-V velocity field
Edmundo Moreno, José G. Fernández-Trincado, William J. Schuster +2
The effects in the local U-V velocity field due to orbital trapping by bar resonances have been studied computing fifteen resonant families in a non-axisymmetric Galactic potential…
Abundance Patterns of and Neutron-capture Elements in the Helmi Stream
Guilherme Limberg, Rafael M. Santucci, Silvia Rossi +6
We identified 8 additional stars as members of the Helmi stream (HStr) in the combined GALAH+ DR3 and EDR3 catalog. By consistently reevaluating claimed members from the lit…
CAPOS: the bulge Cluster APOgee Survey II. The Intriguing "Sequoia" Globular Cluster FSR 1758
María Romero-Colmenares, José G. Fernández-Trincado, Doug Geisler +15
We present results from a study of fifteen red giant members of the intermediate-metallicity globular cluster (GC) FSR 1758 using high-resolution near-infrared spectra collected wi…
The VISCACHA survey -- III. Star clusters counterpart of the Magellanic Bridge and Counter-Bridge in 8D
B. Dias, M. S. Angelo, R. A. P. Oliveira +15
Context. The interactions between the SMC and LMC created the Magellanic Bridge, a stream of gas and stars pulled out of the SMC towards the LMC about 150 Myr ago. The tidal counte…
VVV CL001: Likely the Most Metal-Poor Surviving Globular Cluster in the Inner Galaxy
José G. Fernández-Trincado, Dante Minniti, Stefano O. Souza +11
We present the first high-resolution abundance analysis of the globular cluster VVV~CL001, which resides in a region dominated by high interstellar reddening towards the Galactic B…
The Gaia spectrophotometric standard stars survey -- IV. Results of the absolute photometry campaign
G. Altavilla, S. Marinoni, E. Pancino +18
We present Johnson-Kron-Cousins BVRI photometry of 228 candidate spectrophotometric standard stars for the external (absolute) flux calibration of Gaia data. The data were gathered…
Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys
Guilherme Limberg, Silvia Rossi, Timothy C. Beers +13
We analyze the dynamical properties of 1500 very metal-poor (VMP; [Fe/H] ) halo stars, based primarily on medium-resolution spectroscopic data from the HK and…
The VISCACHA survey -- II. Structure of star clusters in the Magellanic Clouds periphery
J. F. C. Santos, F. F. S. Maia, B. Dias +11
We provide a homogeneous set of structural parameters of 83 star clusters located at the periphery of the Small Magellanic Cloud (SMC) and the Large Magellanic Cloud (LMC). The clu…
The Milky Way bar and bulge revealed by APOGEE DR16 and Gaia EDR3
A. B. A. Queiroz, C. Chiappini, A. Perez-Villegas +23
We investigate the inner regions of the Milky Way with a sample of unprecedented size and coverage thanks to APOGEE DR16 and Gaia EDR3 data. Our inner Galactic sample has more than…
The Bulge Radial Velocity Assay for RR Lyrae stars (BRAVA-RR) DR2: a Bimodal Bulge?
Andrea Kunder, Angeles Perez-Villegas, R. Michael Rich +11
Radial velocities of 2768 fundamental mode RR Lyrae stars (RRLs) toward the Southern Galactic bulge are presented, spanning the southern bulge from -8 < l < +8 and -3 < b <-6. Dist…
Stellar Population Properties of ETGs in Compact Groups of Galaxies
Tatiana C. Moura, Reinaldo R. de Carvalho, Sandro B. Rembold +6
We present results on the study of the stellar population in Early-Type galaxies (ETGs) belonging to 151 Compact Groups (CGs). We also selected a field sample composed of 846 ETGs…
Globular clusters in the inner Galaxy classified from dynamical orbital criteria
Angeles Pérez-Villegas, Beatriz Barbuy, Leandro Kerber +3
Globular clusters (GCs) are the most ancient stellar systems in the Milky Way. Therefore, they play a key role in the understanding of the early chemical and dynamical evolution of…
The VISCACHA survey -- deep and resolved photometry of star clusters in the Magellanic Clouds
Bruno Dias, Francisco Maia, Leandro Kerber +24
The VISCACHA (VIsible Soar photometry of star Clusters in tApii and Coxi HuguA\footnote{LMC and SMC names in the Tupi-Guarani language spoken by native people in Brazil}) Survey is…
The VISCACHA survey - I. Overview and First Results
Francisco F. S. Maia, Bruno Dias, João F. C. Santos +15
The VISCACHA (VIsible Soar photometry of star Clusters in tApii and Coxi HuguA) Survey is an ongoing project based on deep photometric observations of Magellanic Cloud star cluster…
The Orbit of the new Milky Way Globular Cluster FSR1716 = VVV-GC05
Rodrigo Contreras Ramos, Dante Minniti, Jose G. Fernandez-Trincado +10
We use deep multi-epoch near-IR images of the VISTA Variables in the Via Lactea (VVV) Survey to measure proper motions (PMs) of stars in the Milky Way globular cluster FSR1716 = VV…
Orbits of selected globular clusters in the Galactic bulge
A. Pérez-Villegas, L. Rossi, S. Ortolani +3
We present orbit analysis for a sample of 8 inner bulge globular clusters, together with one reference halo object. We used proper motion values derived from long time base CCD dat…
Atypical Mg-poor Milky Way field stars with globular cluster second-generation like chemical patterns
J. G. Fernández-Trincado, O. Zamora, D. A. Garcia-Hernandez +48
We report the peculiar chemical abundance patterns of eleven atypical Milky Way (MW) field red giant stars observed by the Apache Point Observatory Galactic Evolution Experiment (A…