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Dying stars, mass loss and the creation of the elements

Title
Dying stars, mass loss and the creation of the elements
Funding
ARC | Discovery Projects
Contract (GA) number
DP0343832
Start Date
2003/01/01
End Date
2005/12/31
Open Access mandate
no
Organizations
-
More information
http://purl.org/au-research/grants/arc/DP0343832

 

  • Abundances in intermediate-mass AGB stars undergoing third dredge-up and hot-bottom burning

    McSaveney, J. A.; Wood, P. R.; Scholz, M.; Lattanzio, J. C.; Hinkle, K. H. (2007)
    Projects: ARC | Dying stars, mass loss and the creation of the elements (DP0343832)
    High dispersion near-infrared spectra have been taken of seven highly-evolved, variable, intermediate-mass (4-6 Msun) AGB stars in the LMC and SMC in order to look for C, N and O variations that are expected to arise from third dredge-up and hot-bottom burning. The pulsation of the objects has been modelled, yielding stellar masses, and spectral synthesis calculations have been performed in order to derive abundances from the observed spectra. For two stars, abundances of C, N, O, Na, Al, Ti,...

    A study of bright Southern Long Period Variables

    Lebzelter, T.; Hinkle, K. H.; Wood, P. R.; Joyce, R. R.; Fekel, F. C. (2004)
    Projects: NSF | CREST: Center for Systems Science Research (9706268), ARC | Dying stars, mass loss and the creation of the elements (DP0343832)
    In this paper we present radial velocity curves of AGB variables that exhibit various kinds of anomalies: Semiregular variables (SRVs) with typical mira periods, SRVs exceeding the mira 2.5 mag amplitude limit, miras with secondary maxima in their light curves, and a SRV with a long secondary period. The stars with reliable Hipparcos parallaxes from this and from previous studies are plotted in a logP-$M_{K}$-diagram. Our objects nicely follow the logP-$M_{K}$-relations determined for the LMC...
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