Search Results - "Wasserburg, G. J"

NUCLEOSYNTHESIS IN ASYMPTOTIC GIANT BRANCH STARS: Relevance for Galactic Enrichment and Solar System Formation by Busso, M, Gallino, R, Wasserburg, G. J

“…We present a review of nucleosynthesis in AGB stars outlining the development of theoretical models and their relationship to observations. We focus on the new…”
Get full text

Mg isotopic heterogeneity, Al-Mg isochrons, and canonical 26Al/27Al in the early solar system by WASSERBURG, G. J., WIMPENNY, Josh, YIN, Qing-Zhu

“…– There is variability in the Mg isotopic composition that is a reflection of the widespread heterogeneity in the isotopic composition of the elements in the…”
Get full text

Abundances of Sr, Y, and Zr in Metal-Poor Stars and Implications for Chemical Evolution in the Early Galaxy by Qian, Y.-Z, Wasserburg, G. J

“…We have attributed the elements from Sr through Ag in stars of low metallicities to charged-particle reactions (CPRs) in neutrino-driven winds, which are…”
Get full text

ISOTOPE ANOMALIES IN THE FE-GROUP ELEMENTS IN METEORITES AND CONNECTIONS TO NUCLEOSYNTHESIS IN AGB STARS by Wasserburg, G. J., Trippella, O., Busso, M.

“…ABSTRACT We study the effects of neutron captures in AGB stars on "Fe-group" elements, with an emphasis on Cr, Fe, and Ni. These elements show anomalies in…”
Get full text

Cool Bottom Processes on the Thermally Pulsing Asymptotic Giant Branch and the Isotopic Composition of Circumstellar Dust Grains by Nollett, Kenneth M, Busso, M, Wasserburg, G. J

Get full text

Magnetic Mixing in Red Giant and Asymptotic Giant Branch Stars by Nordhaus, J, Busso, M, Wasserburg, G. J, Blackman, E. G, Palmerini, S

“…The available information on isotopic abundances in the atmospheres of low-mass red giant branch (RGB) and asymptotic giant branch (AGB) stars requires that…”
Get full text

Abundances In Very Metal-Poor Dwarf Stars by Cohen, Judith G, Christlieb, Norbert, McWilliam, Andrew, Shectman, Steve, Thompson, Ian, Wasserburg, G. J, Ivans, Inese, Dehn, Matthias, Karlsson, Torgny, Melendez, J

“…We discuss the detailed composition of 28 extremely metal-poor (EMP) dwarfs, 22 of which are from the Hamburg/ESO Survey (HES), based on Keck echelle spectra…”
Get full text

Supernova-driven outflows and chemical evolution of dwarf spheroidal galaxies by Qian, Yong-Zhong, Wasserburg, G. J

“…We present a general phenomenological model for the metallicity distribution (MD) in terms of [Fe/H] for dwarf spheroidal galaxies (dSphs). These galaxies…”
Get full text

Abundances of Actinides and Short-lived Nonactinides in the Interstellar Medium: Diverse Supernova Sources for the r-Processes by Wasserburg, G. J, Busso, M, Gallino, R

Get full text

Presolar Corundum and Spinel in Ordinary Chondrites: Origins from AGB Stars and a Supernova by Choi, Byeon-Gak, Huss, Gary R., Wasserburg, G. J., Gallino, Roberto

“…On the basis of anomalous isotopic compositions of oxygen and magnesium, 14 oxide grains from two primitive meteorites (Bishunpur and Semarkona) have been…”
Get full text

Abundance Analysis of HE 2148–1247, A Star with Extremely Enhanced Neutron Capture Elements by Cohen, Judith G, Christlieb, Norbert, Qian, Y.-Z, Wasserburg, G. J

Get full text

Behavior of Sm and Nd in a lateritic soil profile by Viers, Jérôme, Wasserburg, G.J.

“…A study of lateritic soils and samples of ground and river waters was carried out in the Nsimi-Zoetele, a tropical watershed in the southern Cameroon. The Nd…”
Get full text

Deep Circulation in Red Giant Stars: A Solution to the Carbon and Oxygen Isotope Puzzles? by Wasserburg, G. J, Boothroyd, Arnold I, Sackmann, I.-Juliana

Get full text

Stellar Sources for Heavy r-Process Nuclei by Qian, Y.-Z, Wasserburg, G. J

Get full text

Circumstellar Hibonite and Corundum and Nucleosynthesis in Asymptotic Giant Branch Stars by Choi, Byeon-Gak, Wasserburg, G. J, Huss, Gary R

Get full text

Where, oh where has the r-process gone? by Qian, Y.-Z., Wasserburg, G.J.

“…We present a review of the possible sources for r-process nuclei ( r-nuclei). It is known that there is as yet no self-consistent mechanism to provide abundant…”
Get full text

Prompt Iron Enrichment, Two r-Process Components, and Abundances in Very Metal-Poor Stars by Wasserburg, G. J, Qian, Y.-Z

“…We present a model to explain the wide range of abundances for heavy r-process elements (mass number A>130) at low [Fe/H]. This model requires rapid star…”
Get full text

The transport of U- and Th-series nuclides in a sandy unconfined aquifer by Tricca, A., Wasserburg, G.J., Porcelli, D., Baskaran, M.

“…A comprehensive evaluation of the transport of U, Th, Ra, and Rn nuclides of the 238U- and 232Th-decay series in an unconfined sandy aquifer (Long Island, NY)…”
Get full text

Determination of Nucleosynthetic Yields of Supernovae and Very Massive Stars from Abundances in Metal-Poor Stars by Qian, Y.-Z, Wasserburg, G. J

Get full text

On the formation of Fe-Ni metal in Renazzo-like carbonaceous chondrites by Connolly, Harold C., Huss, Gary R., Wasserburg, G.J.

“…The Fe-Ni metal within chondrites has been postulated to have originated either through condensation or as a byproduct of chondrule formation. To test these…”
Get full text