196 citations
- University of ChileCL6 papers
- Adolfo Ibáñez UniversityCL4 papers
- Millennium Institute of AstrophysicsCL4 papers
- Pontificia Universidad Católica de ChileCL4 papers
- Space Science InstituteUS3 papers
- Universidad Diego PortalesCL3 papers
- University of CambridgeGB3 papers
- University of ConcepciónCL3 papers
- California Institute of TechnologyUS2 papers
- Data Observatory Foundation2 papers
- Metropolitan University of TechnologyCL2 papers
- Millennium Science InitiativeCL2 papers
15 papers
Towards model-free stellar chemical abundances. Potential applications in the search for chemically peculiar stars in large spectroscopic surveys
Theosamuele Signor, Paula Jofré, Hernan Lira +3
Chemical abundance determinations from stellar spectra are challenged by observational noise, limitations in stellar models, and departures from simplifying assumptions. While trad…
Studying stellar populations in Omega Centauri with phylogenetics
P. Jofré, C. Aguilera-Gómez, P. Villarreal +14
The nature and formation history of our Galaxy's largest and most enigmatic stellar cluster, known as Omega Centauri (ocen) remains debated. Here, we offer a novel approach to dise…
A baseline on the relation between chemical patterns and birth stellar cluster
Theosamuele Signor, Paula Jofré, Luis Martí +1
The chemical composition of a star's atmosphere reflects the chemical composition of its birth environment. Therefore, it should be feasible to recognize stars born together that h…
Reinforcement-learning robotic sailboats: simulator and preliminary results
Eduardo Charles Vasconcellos, Ronald M Sampaio, André P D Araújo +7
This work focuses on the main challenges and problems in developing a virtual oceanic environment reproducing real experiments using Unmanned Surface Vehicles (USV) digital twins.…
Computationally-efficient initialisation of GPs: The generalised variogram method
Felipe Tobar, Elsa Cazelles, Taco de Wolff
We present a computationally-efficient strategy to initialise the hyperparameters of a Gaussian process (GP) avoiding the computation of the likelihood function. Our strategy can b…
Searching for changing-state AGNs in massive datasets -- I: applying deep learning and anomaly detection techniques to find AGNs with anomalous variability behaviours
P. Sánchez-Sáez, H. Lira, L. Martí +14
The classic classification scheme for Active Galactic Nuclei (AGNs) was recently challenged by the discovery of the so-called changing-state (changing-look) AGNs (CSAGNs). The phys…