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  4. The oxygen isotopic composition of the Sun as a test of the supernova origin of Al-26 and Ca-41
 
research article

The oxygen isotopic composition of the Sun as a test of the supernova origin of Al-26 and Ca-41

Gounelle, Matthieu
•
Meibom, Anders  
2007
The Astrophysical Journal

Short-lived radionuclides were present in the solar protoplanetary disk in abundances much higher than in the ambient interstellar medium and require a last minute origin. Al-26 (T-1/2 = 0.73 Myr) and Ca-41 (T-1/2 = 0.1 Myr) abundances in the protoplanetary disk constrain models for the origin of short-lived radionuclides because they share a common origin. It is usually assumed that these isotopes were injected into the disk from a nearby Type II supernova. Here we show that the oxygen isotopic composition of the protoplanetary disk would have shifted by several percent relative to the Sun as a result of such injection. Therefore, the supernova injection model will be tested by the anticipated measurement of the solar wind oxygen isotopic composition from the Genesis sample return mission.

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Type
research article
DOI
10.1086/520836
Web of Science ID

WOS:000248675400016

Author(s)
Gounelle, Matthieu
Meibom, Anders  
Date Issued

2007

Published in
The Astrophysical Journal
Volume

664

Start page

L123

End page

L125

Subjects

ISM : abundances

•

solar system : formation

•

Sun : fundamental parameters

•

supernovae : general

•

Short-Lived Radionuclides

•

Early Solar-System

•

Massive Stars

•

Nebula

•

Disks

•

Nucleosynthesis

•

Al-26/Al-27

•

Abundances

•

Meteorites

•

Elements

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LGB  
Available on Infoscience
May 15, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/80393
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