IGPP Seminar Series

The oxygen isotopic composition of the solar system in a galactic context: New results for co in young stellar objects and implications for the birth environment of the solar system

by Ed Young
IGPP, ESS

Abstract

The oxygen isotopic composition of the solar system has long been thought to be peculiar with respect to typical Galactic values. Here we present updated ratios among C16O, C17O and C18O from young stellar objects and compare these with the revised molecular cloud data and the oxygen isotopic composition of the solar system. This new analysis suggests that the solar system is indeed unusual in its oxygen isotopic composition compared with much of the Galaxy today, requiring that either our understanding of Galactic chemical evolution of oxygen in the Galaxy requires revision or that the solar system was born in an environment polluted from previous generations of star formation.
Tuesday, 27 January 2009
3853 Slichter Hall
Refreshments at 3:45 PM
Lecture at 4:00 PM