A5036481526- Astro and Planetary Science
- Planetary Science and Exploration
- Isotope Analysis in Ecology
- Stellar, planetary, and galactic studies
- Geology and Paleoclimatology Research
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Space Exploration and Technology
- Geological and Geochemical Analysis
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Astronomical and nuclear sciences
- Nuclear physics research studies
- Nuclear Physics and Applications
- History and Developments in Astronomy
- Archaeological and Historical Studies
- Astronomy and Astrophysical Research
- Solar and Space Plasma Dynamics
- Space Satellite Systems and Control
- Spacecraft and Cryogenic Technologies
- Higher Education in Latin America
- Technology in Education and Healthcare
- Geological Studies and Exploration
- Geomagnetism and Paleomagnetism Studies
- Atmospheric Ozone and Climate
Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2024
National University of San Juan
2013-2022
Centro Científico Tecnológico - San Juan
2006-2016
Sorbonne Université
2011
Centre National de la Recherche Scientifique
2011
Université Côte d'Azur
2011
Osservatorio Astrofisico di Torino
2011
Argentine National Observatory
2002
Gold Coast Health
1954
We present results derived from the first multi-chord stellar occultations by transneptunian object (50000) Quaoar, observed on 2011 May 4 and 2012 February 17, a single-chord occultation October 15. If timing of five chords obtained in were correct, then Quaoar would possess topographic features (crater or mountain) that be too large for body this mass. An alternative model consists applying time shifts to some account possible errors. Satisfactory elliptical fits are possible, yielding an...
The Hilda asteroids are located in the outer main belt (MB) a stable 3:2 mean-motion resonance (MMR) with Jupiter, while quasi-Hildas have similar orbits but not directly under effect of MMR. Moreover, cometary activity has been detected quasi-Hildas. In this study, we aim to investigate collisional evolution and apply it an investigation into cratering on asteroid (334) Chicago; also intend determine whether impacts between Hildas can serve as viable mechanism for inducing activity. Using...
<i>Context. <i/>Previously known as 2003 EL<sub>61<sub/>, (136108) Haumea, is the largest member of a group trans-Neptunian objects (TNOs) with similar orbits and "unique" spectral characteristics in form neutral slope visible deepest water ice absorption bands observed belt (TNb). Studying surface EL<sub>61<sub/> provides useful constraints origin this particular TNOs about outer Solar System's history.<i>Aims. <i/>We attempt to study composition EL<sub>61<sub/>.<i>Methods. present...
We analyze two multi-chord stellar occultations by Pluto observed on July 18th, 2012 and May 4th, 2013, monitored respectively from five six sites. They provide a total of fifteen light-curves, twelve them being used for simultaneous fit that uses unique temperature profile, assuming clear (no-haze) pure N_2 atmosphere, but allowing possible pressure variation between the dates. find solution fits satisfactorily (i.e. within noise level) all providing atmospheric constraints ~1,190 km...
We present a new extensive analysis of the old problem finding satisfactory calibration relation between geometric albedo and some measurable polarization properties asteroids. To achieve our goals, we use all polarimetric data at disposal. For purposes calibration, limited sample objects for which can be confident to know with good accuracy, according previous investigations other authors. find set updated coefficients classical slope–albedo relation, but generalize consider also...
view Abstract Citations (103) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Steps toward Determination of the Size and Structure Broad-Line Region in Active Galactic Nuclei. VI. Variability NGC 3783 from Ground-based Data Stirpe, G. M. ; Winge, C. Altieri, B. Alloin, D. Aguero, E. L. Anupama, Ashley, R. Bertram, Calderon, J. H. Catchpole, Corradi, Covino, Dottori, A. Feast, W. Ghosh, K. Hutton, Gil Glass, I. S. Grebel, Jorda, Koen, Laney,...
A wide observational campaign was carried out in 2004-2009 aimed to complete the ground-based investigation of Lutetia prior Rosetta fly-by July 2010. We have obtained BVRI photometric and V-band polarimetric measurements over a range phase angles, visible infrared spectra 0.4-2.4 micron range. analyzed them together with previously published data retrieve information on Lutetia's surface properties. Values lightcurve amplitudes, absolute magnitude, opposition effect, coefficient colors seen...
Context. Pluto's tenuous nitrogen (N2) atmosphere undergoes strong seasonal effects due to high obliquity and orbital eccentricity, has been recently (July 2015) observed by the New Horizons spacecraft. Goals are (i) construct a well calibrated record of evolution surface pressure on Pluto (ii) constrain structure lower using central flash in 2015. Method: eleven stellar occultations between 2002 2016 used retrieve atmospheric profiles (density, pressure, temperature) $\sim$5 km $\sim$380...
Aims. We present a comparative analysis of the spectral slope and color distributions Jupiter Trojans, with particular attention to asteroid families. use sample data from Moving Object Catalog Sloan Digital Sky Survey, together spectra obtained several surveys.
Aims. The aim of this work is to study the dynamical effects Galaxy on binary star systems with physical and orbital characteristics similar those population known wide stars exoplanets. As secondary goal we analyse possible consequences stability a hypothetical planetary system orbiting one stellar components.
Aims. Results of different polarimetric campaigns at Complejo Astronómico El Leoncito (Casleo), San Juan, Argentina are presented. The aim these was to search for objects exhibiting anomalous properties, similar those shown by the Ld-class asteroid (234) Barbara, among members same or taxonomic classes.
Aims. We present results of a polarimetric survey main-belt asteroids at Complejo Astronómico El Leoncito (CASLEO), San Juan, Argentina. The aims this are to increase the database asteroid polarimetry, estimate diversity in properties that belong different taxonomic classes, and search for objects exhibit anomalous properties.