Preliminary Iron Distribution on Vesta
نویسندگان
چکیده
Feldman, D.J. Lawrence, P.N. Peplowski, D.W. Mittlefehldt, H.Y. McSween, T.J. McCoy, M.J. Toplis, O. Forni, H. Mizzon, and C.T. Russell, Planetary Science Institute (1700 East Fort Lowell, Suite 106, Tucson, AZ 85719-2395, [email protected]), Johns Hopkins University Applied Physics Laboratory, NASA Johnson Space Center, Earth & Planetary Sciences, University of Tennessee, Knoxville, TN 37996, Smithsonian Institution, University of Toulouse, France, University of California, Los Angeles.
منابع مشابه
Asteroid-meteorite links: the Vesta conundrum(s)
Although a direct link between the HED meteorites and the asteroid 4 Vesta is generally acknowledged, several issues continue to be actively examined that tie Vesta to early processes in the solar system. Vesta is no longer the only basaltic asteroid in the Main belt. In addition to the Vestoids of the Vesta family, the small asteroid Magnya is basaltic but appears to be unrelated to Vesta. Sim...
متن کاملGeological History of Asteroid 4 Vesta: The “Smallest Terrestrial Planet”
The asteroid 4 Vesta is the only known differentiated asteroid with an intact internal structure, probably consisting of a metal core, an ultramafic mantle, and a basaltic crust. Considerable evidence suggests that the HED meteorites are impact ejecta from Vesta, and detailed studies of these meteorites in terrestrial laboratories, combined with ever more sophisticated remote sensing studies of...
متن کاملDawn completes its mission at 4 Vesta
The Dawn mission was designed to test our hypothesis about the origin and evolution of the early solar system by visiting the largest differentiated basaltic asteroid, 4 Vesta, believed to be a survivor from the earliest times of rocky body formation. Observations from orbit show that Vesta is the parent body of the Howardite, Eucrite, Diogenite meteorites. Vesta has an iron core and a eucritic...
متن کاملDawn at Vesta: testing the protoplanetary paradigm.
The Dawn spacecraft targeted 4 Vesta, believed to be a remnant intact protoplanet from the earliest epoch of solar system formation, based on analyses of howardite-eucrite-diogenite (HED) meteorites that indicate a differentiated parent body. Dawn observations reveal a giant basin at Vesta's south pole, whose excavation was sufficient to produce Vesta-family asteroids (Vestoids) and HED meteori...
متن کاملEarly Impact History and Dynamical Origin of Differentiated Meteorites and Asteroids
Laboratory studies of igneously formed meteorites suggest that numerous meteorite parent bodies were melted to form metallic cores and silicate mantles. Studies by the Dawn spacecraft confirm that (4) Vesta melted in this way (McSween et al., 2013; see the chapter by Russell et al. in this volume). In principle, one would think the origin of iron and stonyiron meteorites and achondrites would b...
متن کامل