Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 20360-20379 of 20535
-
(Universidad de Chile, 2018)El objetivo del presente trabajo de título consiste en el diseño y desarrollo de una aplicación web para la visualización y evaluación de la calidad de mallas de polígonos. Las mallas de polígonos se refieren a un conjunto ...
-
Visualization of volcanic rock geochemical data and classification with artificial neural networks (SPRINGER/PLENUM PUBLISHERS, 2006-08)An unsupervised neural network technique, Growing Cell Structures (GCS) was used to visualize geochemical differences between four different island arc volcanic rock types: basalts, andesites, dacites and rhyolites. The ...
-
(2008)It is defined a multiple fragmentation model in 2 dimensions. To represent the material defects, a random distribution of point flaws is considered. The number of generated fragments and breaking criterion also are ...
-
(Elsevier, 2020)Preferential fluid pathways along regional fault systems are crucial for the spatial localization of volcanic and geothermal manifestations. Differences in electric properties of fluids and hydrothermal alteration products ...
-
(2008)This paper discusses group decision making from a visual-interactive perspective. The novelty of our approach is that its major focus is on developing a collection of visualinteractive elements for group decision-making. ...
-
(Universidad de Chile, 2017)Diversos modelos geoestadísticos permiten simular tipos de roca o, más generalmente, unidades geológicas en los yacimientos, entre los cuales se cuenta el modelo de simulación plurigaussiana y el de simulación secuencial ...
-
(The American Astronomical Society, 2003-11-01)We present high angular resolution Very Large Array (VLA) and Berkeley-Illinois-Maryland Association (BIMA) observations of NH3, HCO+, HCN, and SO molecular emission and 1.4, 3.5, and 7 mm continuum emission toward the ...
-
(1998-07-10)We present high angular resolution VLA observations of the C92a, C110a, and C166a radio recombination lines of carbon from the region of massive star formation known as S88B. The observations reveal that the carbon ...
-
(2012-01-01)We present multi-epoch Very Long Baseline Array (VLBA) observations of V773 Tau A, the 51 day binary subsystem in the multiple young stellar system V773 Tau. Combined with previous interferometric and radial velocity ...
-
VLT spectroscopic analysis of HH 202. Implications on dust destruction and thermal inhomogeneities (Universidad Nacional Autonoma de Mexico, 2017)We present a long-slit spectroscopic analysis of Herbig-Haro 202 and the surrounding gas of the Orion Nebula using data from the Very Large Telescope3. We determined the spatial variation of its physical conditions and ...
-
(2001-11)We present the first results of a spectroscopic survey of faint lensed galaxies in the core of the galaxy cluster AC114 (z = 0.312) obtained from observations with the FORS1 spectrograph mounted on the VLT-Antu (Unit ...
-
(EDP SCIENCES S A, 2006-12)Context. Metal-rich globular clusters trace the formation of bulges. Abundance ratios in the metal-rich globular clusters such as NGC 6553 can constrain the formation timescale of the Galactic bulge. Aims. The purpose of ...
-
(EDP SCIENCES, 2016)Context. In recent years there have been many attempts to characterize the occurrence and distribution of stellar, brown dwarf (BD), and planetary-mass companions to solar-type stars with the aim of constraining formation ...
-
(EDP Sciences, 2018-08-07)Context. A low-mass brown dwarf has recently been imaged around HR 2562 (HD 50571), a star hosting a debris disk resolved in the far infrared. Interestingly, the companion location is compatible with an orbit coplanar with ...
-
(EDP Science, 2020)Context. Dusty debris disks around pre- and main-sequence stars are potential signposts for the existence of planetesimals and exoplanets. Giant planet formation is therefore expected to play a key role in the evolution ...
-
(EDP Sciences, 2015)We use the recently released Atacama Large Millimeter Array (ALMA) and VLT/SPHERE science verification data, together with earlier adaptive-optics images, stellar occultation, and lightcurve data to model the 3D shape and ...
-
(EDP Sciences, 2015)We present a detailed analysis of three extremely strong, intervening damped Lyman-α systems (ESDLAs, with log N(H i) ≥ 21.7) observed towards quasars with the Ultraviolet and Visual Echelle Spectrograph on the Very Large ...
-
(EDP Sciences, 2017-05)Context. The mechanism of disk formation around fast-rotating Be stars is not well understood. In particular, it is not clear which mechanisms operate, in addition to fast rotation, to produce the observed variable ejection ...
-
(EDP Sciences, 2015)Context. The properties of the inner disks of bright Herbig AeBe stars have been studied with near-infrared (NIR) interferometry and high resolution spectroscopy. The continuum (dust) and a few molecular gas species have ...
-
(COPERNICUS GESELLSCHAFT MBH, 2011)The VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) was a major field experiment conducted in spring of 2008 off southern Peru and northern Chile, aimed at better understanding the coupled climate ...