Marco Delbó
A5072686112- Astro and Planetary Science
- Planetary Science and Exploration
- Isotope Analysis in Ecology
- Stellar, planetary, and galactic studies
- High-pressure geophysics and materials
- Spacecraft and Cryogenic Technologies
- Astronomy and Astrophysical Research
- Nuclear Physics and Applications
- Geological and Geochemical Analysis
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Space Exploration and Technology
- Geomagnetism and Paleomagnetism Studies
- Astronomical Observations and Instrumentation
- Geology and Paleoclimatology Research
- Geophysics and Gravity Measurements
- Space Satellite Systems and Control
- Atmospheric Ozone and Climate
- earthquake and tectonic studies
- Solar and Space Plasma Dynamics
- Spacecraft Design and Technology
- Scientific Research and Discoveries
- Space Science and Extraterrestrial Life
- High-Velocity Impact and Material Behavior
- Calibration and Measurement Techniques
Observatoire de la Côte d’Azur
2016-2025
University of Leicester
2023-2025
Université Côte d'Azur
2016-2025
Centre National de la Recherche Scientifique
2015-2024
Lagrange Laboratory
2014-2024
Arizona State University
2023
Astronomical Observatory of Rome
2023
Northern Arizona University
2023
Osservatorio Astronomico di Padova
2019-2023
Weatherford College
2023
Abstract We review the results of an extensive campaign to determine physical, geological, and dynamical properties asteroid (101955) Bennu. This investigation provides information on orbit, shape, mass, rotation state, radar response, photometric, spectroscopic, thermal, regolith, environmental combine these data with cosmochemical models develop a hypothetical timeline for Bennu's formation evolution. infer that Bennu is ancient object has witnessed over 4.5 Gyr solar system history. Its...
Heterogeneous thermal properties of Bennu are due primarily to spatial mixing two boulder types with differing strengths.
Visible-wavelength color and reflectance provide information about the geologic history of planetary surfaces. Here we present multispectral images (0.44 to 0.89 micrometers) near-Earth asteroid (101955) Bennu. The surface has variable colors overlain on a moderately blue global terrain. Two primary boulder types are distinguishable by their texture. Space weathering Bennu materials does not simply progress from red (or vice versa). Instead, freshly exposed, redder surfaces initially...
A quarter of known asteroids is associated with more than 100 distinct asteroid families, meaning that these originate as impact fragments from the family parent bodies. The determination which remaining population are members undiscovered or accreted planetesimals protoplanetary disk, would constrain a critical phase planetary formation by unveiling unknown planetesimal size distribution. We discovered 4-billion-year-old extending across entire inner part main belt whose include most dark...
Context:Optical interferometry is at a key development stage. ESO's VLTI has established stable, robust infrastructure for long-baseline general astronomical observers. The present second-generation instruments offer wide wavelength coverage and improved performance. Their sensitivity measurement accuracy lead to data images of high reliability. Aims:We have developed MATISSE, the Multi AperTure mid-Infrared SpectroScopic Experiment, access resolution imaging in spectral domain explore...
When the OSIRIS-REx spacecraft pressed its sample collection mechanism into surface of Bennu, it provided a direct test poorly understood near-subsurface physical properties rubble-pile asteroids, which consist rock fragments at rest in microgravity. Here, we find that forces measured by are best modeled as granular bed with near-zero cohesion is half dense bulk asteroid. The low gravity small asteroid such Bennu effectively weakens near subsurface not compressing upper layers, thereby...
Examining the albedo distribution of near-Earth object (NEO) population allows for a better understanding relationship between absolute (H) magnitude and size, which impacts calculations size frequency impact hazards. NEO albedos also sheds light on differences Main Belt populations. We combine results from ExploreNEOs Warm Spitzer Exploration Science program with taxonomic classifications literature, publicly available data sets, new observations our concurrent spectral survey to derive...
Disk-integrated photometric data of asteroids do not contain accurate information on shape details or size scale. Additional such as disk-resolved images stellar occultation measurements further constrain asteroid shapes and allow estimates. We aim to use all available about forty obtained by the Near-InfraRed Camera (Nirc2) mounted W.M. Keck II telescope together with disk-integrated photometry determine their volumes. can then volume, in combination known mass, derive bulk density....
Context. Asteroid modeling efforts in the last decade resulted a comprehensive dataset of almost 400 convex shape models and their rotation states. These already provided deep insight into physical properties main-belt asteroids or large collisional families. Going finer detail (e.g., smaller families, with sizes ≲20 km) requires knowledge parameters more objects.