dc.contributor.author | Speck, Angela K. | eng |
dc.contributor.author | Bose, M. | eng |
dc.contributor.author | Floss, C. | eng |
dc.contributor.author | Stadermann, F. J. | eng |
dc.contributor.author | Stroud, R. M. | eng |
dc.date.issued | 2010 | eng |
dc.description.abstract | We have found two presolar silica grains in ALH A77307, which exhibit excesses in 17O but are normal in 18O. Silicon-oxide grains probably form during rapid cooling under non-equilibrium conditions in O-rich AGB stars with low Mg/Si ratios. | eng |
dc.description.sponsorship | This work was supported by NASA grants
NNX07AU8OH, NNX08AI13G and NNXO7AI82G. | eng |
dc.identifier.citation | 41st Lunar and Planetary Science Conference, held March 1-5, 2010 in The Woodlands, Texas. LPI Contribution No. 1533, p.1812 | eng |
dc.identifier.uri | http://hdl.handle.net/10355/6516 | eng |
dc.language | English | eng |
dc.publisher | Lunar and Planetary Institute | eng |
dc.relation.ispartofcollection | University of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publications | eng |
dc.source.uri | http://www.lpi.usra.edu/meetings/lpsc2010/pdf/1812.pdf | eng |
dc.subject | presolar silica | eng |
dc.subject | ALH A77307 | eng |
dc.subject.lcsh | Asymptotic giant branch stars | eng |
dc.subject.lcsh | Astromineralogy | eng |
dc.subject.lcsh | Silica dust | eng |
dc.title | The Origin of Presolar Silica Grains in AGB Stars | eng |
dc.type | Article | eng |