activity
20012024
most citedMeasurement of stellar age from uranium decay

381 citations · 867 across the 19 of their papers we have counts for

collaborators

19 papers

astro-ph.GA2024

Combined Gemini-South and HST photometric analysis of the globular cluster NGC 6558. The age of the metal-poor population of the Galactic Bulge

S. O. Souza, M. Libralato, D. Nardiello +8

NGC~6558 is a low-galactic latitude globular cluster projected in the direction of the Galactic bulge. Due to high reddening, this region presents challenges in deriving accurate p…

astro-ph.GA2023★ 21 cited

The VISCACHA survey -- VII. Assembly history of the Magellanic Bridge and SMC Wing from star clusters

R. A. P. Oliveira, F. F. S. Maia, B. Barbuy +15

The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds Myr ago, as proposed by -body models, would be impri…

astro-ph.GA2022★ 8 cited

The VISCACHA survey -- V. Rejuvenating three faint SMC clusters

E. Bica, F. F. S. Maia, R. A. P. Oliveira +9

We present the analysis of three faint clusters of the Small Magellanic Cloud RZ82, HW42 and RZ158. We employed the SOAR telescope instrument SAM with adaptive optics, allowing us…

astro-ph.SR2022★ 5 cited

Be, V and Cu in the halo star CS 31082-001 from near-UV spectroscopy

H. Ernandes, B. Barbuy, A. Friaça +5

The 'First Stars' programme revealed the metal-poor halo star CS 31082-001 to be r-process and actinide rich, including the first measurement of a uranium abundance for an old star…

astro-ph.GA2022★ 39 cited

The VISCACHA survey -- IV. The SMC West Halo in 8D

B. Dias, M. C. Parisi, M. Angelo +18

The structure of the Small Magellanic Cloud (SMC) is very complex, in particular in the periphery that suffers more from the interactions with the Large Magellanic Cloud (LMC). A w…

astro-ph.GA2021★ 9 cited

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…