34 citations · 78 across the 9 of their papers we have counts for
9 papers
Optimal observational scheduling framework for binary and multiple stellar systems
Miguel Videla, Rene A. Mendez, Jorge F. Silva +1
The optimal instant of observation of astrophysical phenomena for objects that vary on human time-sales is an important problem, as it bears on the cost-effective use of usually sc…
Bayesian inference in single-line spectroscopic binaries with a visual orbit
Miguel Videla, Rene A. Mendez, Ruben M. Claveria +2
We present a Bayesian inference methodology for the estimation of orbital parameters on single-line spectroscopic binaries with astrometric data, based on the No-U-Turn sampler Mar…
Data-Driven Representations for Testing Independence: Modeling, Analysis and Connection with Mutual Information Estimation
Mauricio E. Gonzalez, Jorge F. Silva, Miguel Videla +1
This work addresses testing the independence of two continuous and finite-dimensional random variables from the design of a data-driven partition. The empirical log-likelihood stat…
Bayes-based orbital elements estimation in triple hierarchical stellar systems
Constanza Villegas, Rene A. Mendez, Jorge F. Silva +1
Under certain rather prevalent conditions (driven by dynamical orbital evolution), a hierarchical triple stellar system can be well approximated, from the standpoint of orbital par…
Visual binary stars with partially missing data: Introducing multiple imputation in astrometric analysis
Ruben M. Claveria, Rene A. Mendez, Jorge F. Silva +1
Partial measurements of relative position are a relatively common event during the observation of visual binary stars. However, these observations are typically discarded when esti…
Optimality of the Maximum Likelihood estimator in Astrometry
Sebastian Espinosa, Jorge F. Silva, Rene A. Mendez +2
The problem of astrometry is revisited from the perspective of analyzing the attainability of well-known performance limits (the Cramer-Rao bound) for the estimation of the relativ…
Orbits for eighteen visual binaries and two double-line spectroscopic binaries observed with HRCAM on the CTIO SOAR 4m telescope, using a new Bayesian orbit code based on Markov Chain Monte Carlo
Rene A. Mendez, Ruben M. Claveria, Marcos E. Orchard +1
We present orbital elements and mass sums for eighteen visual binary stars of spectral types B to K (five of which are new orbits) with periods ranging from 20 to more than 500 yr.…
Analysis of the Bayesian Cramer-Rao lower bound in astrometry: Studying the impact of prior information in the location of an object
Alex Echeverria, Jorge F. Silva, Rene A. Mendez +1
Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community. Aims. We analyse b…
Performance analysis of the Least-Squares estimator in Astrometry
Rodrigo A. Lobos, Jorge F. Silva, Rene A. Mendez +1
We characterize the performance of the widely-used least-squares estimator in astrometry in terms of a comparison with the Cramer-Rao lower variance bound. In this inference contex…