A5089733423- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Planetary Science and Exploration
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Geology and Paleoclimatology Research
- Astronomical Observations and Instrumentation
- Space Satellite Systems and Control
- Archaeological and Historical Studies
- Space Exploration and Technology
- Complex Systems and Time Series Analysis
- Gamma-ray bursts and supernovae
- Nuclear physics research studies
- Statistical Mechanics and Entropy
- Historical Astronomy and Related Studies
- Astronomical and nuclear sciences
- History and Developments in Astronomy
- Calibration and Measurement Techniques
- Impact of Light on Environment and Health
- Laser-Plasma Interactions and Diagnostics
- Advanced Thermodynamics and Statistical Mechanics
- Atmospheric Ozone and Climate
- Isotope Analysis in Ecology
- Spacecraft Design and Technology
- Classical Antiquity Studies
Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2025
Instituto de Astrofísica de La Plata
2015-2025
Universidad Nacional de La Plata
2014-2024
Instituto de Geofísica y Astronomía
2019
The secular approximation of the hierarchical three body systems has been proven to be very useful in addressing many astrophysical systems, from planets, stars black holes. In such a system two objects are on tight orbit, and tertiary is much wider orbit. Here we study dynamics by taking mass zero solve up octupole level approximation. We find rich that outer orbit undergoes due gravitational perturbations inner binary. nominal result precession nodes mostly limited for lowest order...
We homogeneously analyse $\sim 3.2\times 10^5$ photometric measurements for 1100$ transit lightcurves belonging to $17$ exoplanet hosts. The data cover $16$ years 2004--2019 and include amateur professional observations. Old archival were reprocessed using up-to-date exoplanetary parameters empirically debiased limb-darkening models. also derive self-consistent radial-velocity fits $13$ targets. confirm the nonlinear TTV trend in WASP-12 at a high significance, with consistent magnitude....
We report follow-up observations of transiting exoplanets that have either large uncertainties (>10 minutes) in their transit times or not been observed for over three years. A fully robotic ground-based telescope network, from citizen astronomers and data TESS used to study eight planets, refining ephemeris orbital data. Such are key ensuring accurate upcoming ground space-based telescopes which may seek characterise the atmospheres these planets. find deviations expected time all with...
The Hilda asteroids are located in the outer main belt a stable 3:2 mean-motion resonance with Jupiter, while quasi-Hildas (qH) have similar orbits but not directly under effect of MMR. Moreover, cometary activity has been detected qH. In this study, we investigate collisional evolution and apply it to study cratering on asteroid 334 Chicago, as well determine whether impacts between Hildas qH can serve viable mechanism for inducing activity. We simulated over period 4 Gyr. considered three...
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...
We study the impactor flux and cratering on Ceres Vesta caused by collisional dynamical evolution of asteroid Main Belt. develop a statistical code based well-tested model for simultaneous Belt NEA size distributions. This includes catastrophic collisions noncollisional removal processes such as Yarkovsky effect orbital resonances. The assumes that depletion early was very strong, owing to that, most comminution occurred when its structure similar present one. Our results indicate number D >...
It was shown in previous works the existence of weakly chaotic orbits plutino population that diffuse very slowly. These correspond to long-term escapers and then represent plutinos are escaping from resonance at present. In this paper we perform numerical simulations order explore dynamical evolution recently escaped resonance. The were divided two parts. first one evolved 20,000 test particles detect select escapers. second one, numerically integrate selected study their post behavior. Our...
Context. Recent studies have analyzed the dynamical evolution of outer small body populations under effects an eccentric inner massive perturber, which result from a planetary scattering event. These investigations suggest that such reservoirs are composed particles on prograde and retrograde orbits, as well whose orbit flips to back again showing coupling between inclination i ascending node longitude Ω (Type-F particles). Aims. We analyze role general relativity (GR) dynamics influence...
Aims. In this paper, we analyze the collisional and dynamical evolution of population Plutinos.
Context. The Saturnian satellite system has been observed in detail by the Cassini-Huygens mission. These satellites present different surface features, including impact craters caused small objects probably coming from trans-Neptunian region.
We analyze the process of planetary scattering around M0-type stars. To do this, we carry out N-body simulations with three Jupiter-mass planets close to their instability limit together an outer planetesimal disk. This paper focuses on analysis systems in which a single planet survives after dynamical event. The small body reservoirs show different behaviors. In fact, our produce particles prograde and retrograde orbits, as well whose orbital plane flips from back again along evolution....
We study the impactor flux and cratering on Pluto Charon due to collisional evolution of Plutinos. Plutinos are those trans-Neptunian objects located at 39.5 AU, in 3:2 mean motion resonance with Neptune. To do this, we develop a statistical code that includes catastrophic collisions events, takes into account stability instability zones proposes different initial populations for uncertainty size distribution small sizes. Depending population, our results indicate following. The number D > 1...