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The Double-Degenerate Nucleus of the Planetary Nebula TS 01. A Close Binary Evolution Showcase
Gagik Tovmassian, Lev Yungelson, Thomas Rauch +8
We present a detailed investigation of SBS1150+599A, a close binary star hosted by the planetary nebula PN G135.9+55.9 (TS01, Stasinska et al, 2009). The nebula, located in the Gal…
Can solid body destruction explain abundance discrepancies in planetary nebulae?
William J. Henney, Grazyna Stasinska
In planetary nebulae, abundances of oxygen and other heavy elements derived from optical recombination lines are systematically higher than those derived from collisionally excited…
Planetary nebulae in M33: probes of AGB nucleosynthesis and ISM abundances
Fabio Bresolin, Grazyna Stasinska, Jose M. Vilchez +2
We have obtained deep optical spectrophotometry of 16 planetary nebulae in M33, mostly located in the central two kpc of the galaxy, with the Subaru and Keck telescopes. We have de…