758 citations · 3.4k across the 65 of their papers we have counts for
19 papers · 1 filter
The Gaia alerted fading of the FUor-type star Gaia21elv
Zsófia Nagy, Sunkyung Park, Péter Ábrahám +26
FU Orionis objects (FUors) are eruptive young stars, which exhibit outbursts that last from decades to a century. Due to the duration of their outbursts, and to the fact that only…
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…
Speckle Interferometry at SOAR in 2021
Andrei Tokovinin, Brian D. Mason, Rene A. Mendez +1
The speckle interferometry program at the the 4.1 m Southern Astrophysical Research Telescope (SOAR), started in 2008, now accumulated over 30,300 individual observations of 12,700…
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…
Orbital elements and individual component masses from joint spectroscopic and astrometric data of double-line spectroscopic binaries
Jennifer Anguita-Aguero, Rene A. Mendez, Ruben M. Claveria +1
We present orbital elements, orbital parallaxes and individual component masses, for fourteen spatially resolved double-line spectroscopic binaries derived doing a simultaneous fit…
Speckle Interferometry at SOAR in 2020
Andrei Tokovinin, Brian D. Mason, Rene A. Mendez +3
The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2020, as well as earlier unpublished data, are given, totaling…
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…
Orbits and masses of binaries from Speckle Interferometry at SOAR
Rene A. Mendez, Ruben M. Claveria, Edgardo Costa
We present results from Speckle inteferometric observations of fifteen visual binaries and one double-line spectroscopic binary, carried out with the HRCam Speckle camera of the SO…
Speckle interferometry at SOAR in 2019
Andrei Tokovinin, Brian D. Mason, Rene A. Mendez +2
The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2019 are given, totaling 2555 measurements of 1972 resolved pai…
Speckle interferometry at SOAR in 2018
Andrei Tokovinin, Brian D. Mason, Rene A. Mendez +2
The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2018 are given, totaling 3097 measurements of 2427 resolved pai…
On the origin of very massive stars around NGC 3603
V. M. Kalari, J. S. Vink, W. de Wit +2
The formation of the most massive stars in the Universe remains an unsolved problem. Are they able to form in relative isolation in a manner similar to the formation of solar-type…
Speckle interferometry at SOAR in 2016 and 2017
Andrei Tokovinin, Brian D. Mason, William I. Hartkopf +2
The results of speckle interferometric observations at the 4.1 m SOAR telescope in 2016 and 2017 are given, totaling 2483 measurements of 1570 resolved pairs and 609 non-resolution…
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.…
Near-IR trigonometric parallaxes of nearby stars in the Galactic plane using the VVV
J. C. Beamin, R. A. Mendez, R. L. Smart +7
We use the multi-epoch K band observations, covering a 5 years baseline to obtain milli and sub-milli arcsec precision astrometry for a sample of eighteen previously…
Speckle interferometry at SOAR in 2015
Andrei Tokovinin, Brian D. Mason, William I. Hartkopf +2
The results of speckle interferometric observations at the SOAR telescope in 2015 are given, totalling 1303 measurements of 924 resolved binary and multiple stars and non-resolutio…
Speckle interferometry at SOAR in 2014
Andrei Tokovinin, Brian D. Mason, William I. Hartkopf +2
The results of speckle interferometric observations at the SOAR telescope in 2014 are given. A total of 1641 observations were taken, yielding 1636 measurements of 1218 resolved bi…
WISEP J061135.13-041024.0AB: A J-Band Flux Reversal Binary at the L/T Transition
Christopher R. Gelino, R. L. Smart, Federico Marocco +6
We present Keck II laser guide star adaptive optics observations of the brown dwarf WISEP J061135.13-041024.0 showing it is a binary with a component separation of 0.4". This syste…
Speckle interferometry at SOAR in 2012 and 2013
Andrei Tokovinin, Brian D. Mason, William I. Hartkopf
We report the results of speckle runs at the 4.1-m Southern Astronomical Research (SOAR) telescope in 2012 and 2013. A total of 586 objects were observed. We give 699 measurements…
The Solar Neighborhood. XXII. Parallax Results from the CTIOPI 0.9m Program: Trigonometric Parallaxes of 64 Nearby Systems with 0\farcs5 1\farcs0 yr (SLOWMO sample)
Adric R. Riedel, John P. Subasavage, Charlie T. Finch +7
We present trigonometric parallaxes of 64 stellar systems with proper motions between 0\farcs5 yr and 1\farcs0 yr from the ongoing RECONS (Research Consortium On Near…