Results 111 to 120 of about 12,699 (236)
Probing Shocked Ejecta in SN 1987A: A Novel Diagnostic Approach Using XRISM-Resolve
The Astrophysical Journal LettersSupernova (SN) 1987A is one of the best candidates to exploit the capabilities of the freshly launched XRISM satellite. This celestial object offers the unique opportunity to study the evolution of an SN into a young supernova remnant. To date, the X-ray
Vincenzo Sapienza +12 more
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Trajectories of ballistic impact ejecta on a rotating Earth
, 1994 On an airless, slowly rotating planetary body like the Moon, ejecta particles from an impact follow simple ballistic trajectories. If gaseous interactions in the fireball are ignored, ejecta particles follow elliptical orbits with the center of the ...
Alvarez, W.
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Delivery of DART Impact Ejecta to Mars and Earth: Opportunity for Meteor Observations
The Planetary Science JournalNASA’s Double Asteroid Redirection Test (DART) and ESA’s Hera missions offer a unique opportunity to investigate the delivery of impact ejecta to other celestial bodies. We performed ejecta dynamical simulations using 3 million particles categorized into
Eloy Peña-Asensio +3 more
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Mercurian impact ejecta: Meteorites and mantle
, 2009 We have examined the fate of impact ejecta liberated from the surface of Mercury due to impacts by comets or asteroids, in order to study 1) meteorite transfer to Earth, and 2) reaccumulation of an expelled mantle in giant-impact scenarios seeking to ...
Coffey, J., Gladman, B.
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Ejecta Mass Estimates from the DART Impact Plume Inferred from LICIACube Images
The Planetary Science JournalWe report ejecta mass estimates produced by the Double Asteroid Redirection Test impact with Dimorphos, the secondary of the Didymos asteroid binary system.
Ramin Lolachi +13 more
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Origin of α-poor Very Metal-poor Stars
The Astrophysical JournalAmong very metal-poor (VMP) stars, α -poor VMP ( α -PVMP) stars that have subsolar values of [X/Fe] for Mg and other α elements are rare and are thought to have been formed from gas polluted by Type 1a supernova (SN 1a). However, recent analyses indicate
S. K. Jeena, Projjwal Banerjee
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Lobate Ejecta Deposits in Mercury's South Polar Quadrangle (H15)
, 2022 International audienceIntroduction: During geological mapping of Mercury's south polar quadrangle (H15), we have discovered unrecorded lobate ejecta deposits, one in particular at Nairne crater (70.36° S, 1.65° E) exhibiting a unique and distinctive ...
Balme, M +3 more
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Minimum velocity for impact ejecta to form secondaries on terrestrial bodies
Communications Earth & EnvironmentThe minimum velocity (v) for impact ejecta to form secondary craters (secondaries) remains enigmatic, but it is a crucial parameter in untangling the fate of impact ejecta on planetary surfaces.
Rui Xu +4 more
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Earth and Space ScienceThe martian tropical water ice spatial and temporal distribution was characterized using impact crater ejecta type, location, size, and age in one of two epochs, ≤3.4 Ga and >3.4 Ga, using statistical models designed for spatial and temporal correlation ...
Jamie D. Riggs, Michelle R. Kirchoff
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