Search Results - "DellaGiustina, Daniella"
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Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu
Published in Science (American Association for the Advancement of Science) (06-11-2020)“…(101955) Bennu is a dark, Earth orbit-crossing, asteroid thought to be assembled from the fragments of an ancient collision. Spatially-resolved visible and…”
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Alignment of fractures on Bennu’s boulders indicative of rapid asteroid surface evolution
Published in Nature geoscience (01-06-2022)“…On asteroids, fractures develop due to stresses driven by diurnal temperature variations at spatial scales ranging from sub-millimetres to metres. However, the…”
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Particle Size-Frequency Distributions of the OSIRIS-REx Candidate Sample Sites on Asteroid (101955) Bennu
Published in Remote sensing (Basel, Switzerland) (01-04-2021)“…We manually mapped particles ranging in longest axis from 0.3 cm to 95 m on (101955) Bennu for the Origins, Spectral Interpretation, Resource Identification,…”
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Widely Distributed Exogenic Materials of Varying Compositions and Morphologies on Asteroid (101955) Bennu
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…Using the multiband imager MapCam on board the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer)…”
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High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphology
Published in Icarus (New York, N.Y. 1962) (15-11-2021)“…The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on…”
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Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by OSIRIS‐REx
Published in Meteoritics & planetary science (01-09-2024)“…On September 24, 2023, NASA's OSIRIS‐REx mission dropped a capsule to Earth containing ~120 g of pristine carbonaceous regolith from Bennu. We describe the…”
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Spectral Effects of Varying Texture and Composition in Two-component “Mudpie” Simulations: Insights for Asteroid (101955) Bennu
Published in Meteoritics & planetary science (01-06-2021)“…Data returned by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) spacecraft have shown that asteroid…”
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Assessing the Sampleability of Bennu’s Surface for the OSIRIS-REx Asteroid Sample Return Mission
Published in Space science reviews (2022)“…NASA’s first asteroid sample return mission, OSIRIS-REx, collected a sample from the surface of near-Earth asteroid Bennu in October 2020 and will deliver it…”
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Geophysical constraints on the properties of a subglacial lake in northwest Greenland
Published in The cryosphere (16-07-2021)“…In this study, we report the results of an active-source seismology and ground-penetrating radar survey performed in northwestern Greenland at a site where the…”
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The Role of Hydrated Minerals and Space Weathering Products in the Bluing of Carbonaceous Asteroids
Published in The planetary science journal (01-04-2021)“…The surfaces of airless bodies such as lunar and S-type asteroids typically become spectrally redder in visible to near-infrared reflectance with longer…”
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Spectrophotometric Modeling and Mapping of (101955) Bennu
Published in The planetary science journal (01-06-2021)“…Using hyperspectral data collected by OVIRS, the visible and infrared spectrometer onboard the OSIRIS-REx (Origins, Spectral Interpretation, Resource…”
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Near-zero cohesion and loose packing of Bennu's near subsurface revealed by spacecraft contact
Published in Science advances (08-07-2022)“…When the OSIRIS-REx spacecraft pressed its sample collection mechanism into the surface of Bennu, it provided a direct test of the poorly understood…”
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High-resolution observations of bright boulders on asteroid Ryugu: 2. Spectral properties
Published in Icarus (New York, N.Y. 1962) (15-11-2021)“…Many small boulders with reflectance values higher than 1.5 times the average reflectance have been found on the near-Earth asteroid 162,173 Ryugu. Based on…”
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Comparing ramp rates from large and small PV systems, and selection of batteries for ramp rate control
Published in 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC) (01-06-2013)“…We compare the AC power fluctuations from a 1.6 MW and a 2 kW photovoltaic (PV) system. Both of these PV generating stations exhibit fluctuations exceeding 50%…”
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Conference Proceeding -
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The consequence of soiling on PV system performance in Arizona; Comparing three study methods
Published in 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC) (01-06-2013)“…We study the consequence of soiling on different flat-plate photovoltaic modules in Tucson, Arizona. We compare three different methods of study. These methods…”
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Conference Proceeding -
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Conversion efficiencies of six grid-tied inverters at the Tucson electric power solar test yard
Published in 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC) (01-06-2013)“…We measure the conversion efficiencies of six inverters manufactured by Fronius, SMA, and Xantrex. We measure efficiencies ranging from 87.0% to 91.7%. We find…”
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Conference Proceeding -
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Photometry of asteroid (101955) Bennu with OVIRS on OSIRIS-REx
Published in Icarus (New York, N.Y. 1962) (01-04-2021)“…NASA's OSIRIS-REx spacecraft arrived at its sampling target, asteroid (101955) Bennu, in December 2018 and started a series of global observation campaigns…”
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A high-resolution global basemap of (101955) Bennu
Published in Icarus (New York, N.Y. 1962) (15-03-2021)“…In early 2019, NASA's OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) mission surveyed asteroid (101955)…”
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Disk-resolved photometric modeling and properties of asteroid (101955) Bennu
Published in Icarus (New York, N.Y. 1962) (15-03-2021)“…OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) is a NASA mission to return a sample of asteroid…”
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Crater Population on Asteroid (101955) Bennu Indicates Impact Armouring and a Young Surface
Published in Nature geoscience (01-06-2022)“…The impactor-to-crater size scaling relationships that enable estimates of planetary surface ages rely on an accurate formulation of impactor–target physics…”
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