Archive for March 14th, 2018

Extremely 54Cr- and 50Ti-rich presolar oxide grains in a primitive meteorite: Formation in rare types of supernovae and implications for the astrophysical context of solar system birthOPEN ACCESS

14/03/2018 22:41 · by karmaka · in carbonaceous chondrite, CI, presolar grains

Larry R. Nittler, Conel M. O’D. Alexander, Nan Liu, Jianhua Wang Accepted for publication in The Astrophysical Journal Letters PDF (OPEN ACCESS) “We report the identification of 19 presolar oxide grains from the orgu CI…

Nature, formation, and distribution of carbonates on CeresOPEN ACCESS

14/03/2018 22:15 · by karmaka · in Ceres, dwarf planets

Filippo Giacomo Carrozzo, Maria Cristina De Sanctis, Andrea Raponi, Eleonora Ammannito, Julie Castillo-Rogez, Bethany L. Ehlmann, Simone Marchi, Nathaniel Stein, Mauro Ciarniello, Federico Tosi, Fabrizio Capaccioni, Maria Teresa Capria, Sergio Fonte, Michelangelo Formisano, Alessandro Frigeri,…

Variations in the amount of water ice on Ceres’ surface suggest a seasonal water cycleOPEN ACCESS

14/03/2018 22:13 · by karmaka · in Ceres, dwarf planets, water

Andrea Raponi, Maria Cristina De Sanctis, Alessandro Frigeri, Eleonora Ammannito, Mauro Ciarniello, Michelangelo Formisano, Jean-Philippe Combe, Gianfranco Magni, Federico Tosi, Filippo Giacomo Carrozzo, Sergio Fonte, Marco Giardino, Steven P. Joy, Carol A. Polanskey, Marc D….

The Surface Composition of Ceres from the Dawn Mission

14/03/2018 22:11 · by karmaka · in aqueous alteration, Ceres, Dawn, dwarf planets, space missions

Thomas B. McCord, Francesca Zambon Icarus Available online 14 March 2018 LINK “Highlights • This article provides the context for “Ceres mineralogical mapping special issue”; • We describe the global mineralogy of Ceres; • A…

Uranium isotope ratios of Muonionalusta troilite and complications for the absolute age of the IVA iron meteorite core

14/03/2018 15:09 · by karmaka · in asteroid, early chronology, iron, IVA

Gregory A. Brennecka, Yuri Amelin, Thorsten Kleine Earth and Planetary Science Letters Volume 490, 15 May 2018, Pages 1–10 LINK “Highlights • Muonionalusta troilite exhibits a range of measured 238U/235U values. • Variable 238U/235U greatly…

Towards a theoretical determination of the geographical probability distribution of meteoroid impacts on EarthOPEN ACCESS

14/03/2018 07:01 · by karmaka · in impact / impact-structures, meteor/meteoroid/bolide

Jorge I. Zuluaga, Mario Sucerquia Accepted for publication in MNRAS PDF (OPEN ACCESS) update (15 March 2018 ): LINK “Tunguska and Chelyabinsk impact events occurred inside a geographical area of only 3.4% of the Earth’s…