Dating the Moon-forming impact event with asteroidal meteorites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10314999" target="_blank" >RIV/00216208:11320/15:10314999 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1126/science.aaa0602" target="_blank" >http://dx.doi.org/10.1126/science.aaa0602</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1126/science.aaa0602" target="_blank" >10.1126/science.aaa0602</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dating the Moon-forming impact event with asteroidal meteorites

Popis výsledku v původním jazyce

The inner solar system's biggest and most recent known collision was the Moon-forming giant impact between a large protoplanet and proto-Earth. Not only did it create a disk near Earth that formed the Moon, it also ejected several percent of an Earth mass out of the Earth-Moon system. Here, we argue that numerous kilometer-sized ejecta fragments from that event struck main-belt asteroids at velocities exceeding 10 kilometers per second, enough to heat and degas target rock. Such impacts produce similarto 1000 times more highly heated material by volume than do typical main belt collisions at similar to 5 kilometers per second. By modeling their temporal evolution, and fitting the results to ancient impact heating signatures in stony meteorites, we infer that the Moon formed similar to 4.47 billion years ago, which is in agreement with previous estimates.

Název v anglickém jazyce

Dating the Moon-forming impact event with asteroidal meteorites

Popis výsledku anglicky

The inner solar system's biggest and most recent known collision was the Moon-forming giant impact between a large protoplanet and proto-Earth. Not only did it create a disk near Earth that formed the Moon, it also ejected several percent of an Earth mass out of the Earth-Moon system. Here, we argue that numerous kilometer-sized ejecta fragments from that event struck main-belt asteroids at velocities exceeding 10 kilometers per second, enough to heat and degas target rock. Such impacts produce similarto 1000 times more highly heated material by volume than do typical main belt collisions at similar to 5 kilometers per second. By modeling their temporal evolution, and fitting the results to ancient impact heating signatures in stony meteorites, we infer that the Moon formed similar to 4.47 billion years ago, which is in agreement with previous estimates.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-01308S" target="_blank" >GA13-01308S: Dynamika malých těles sluneční soustavy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Science

ISSN

0036-8075

e-ISSN

—

Svazek periodika

348

Číslo periodika v rámci svazku

6232

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

3

Strana od-do

321-323

Kód UT WoS článku

000352999000040

EID výsledku v databázi Scopus

2-s2.0-84927747871