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Article
A high-mass planetary nebula in a Galactic open cluster
Planetary nebulae are the ionized ejected envelopes surrounding the remnant cores of dying stars. Theory predicts that main-sequence stars of one to about eight solar masses may eventually form planetary nebul...
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Article
Author Correction: Reduction of the maximum mass-loss rate of OH/IR stars due to unnoticed binary interaction
In the version of this Letter originally published, the caption of Fig. 2 incorrectly said J = 3–2; it should have said J = 2–1. This has now been corrected.
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Article
Reduction of the maximum mass-loss rate of OH/IR stars due to unnoticed binary interaction
In 1981, the idea of a superwind that ends the life of cool giant stars was proposed1. Extreme oxygen-rich giants, OH/IR stars, develop superwinds with the highest mass-loss rates known so far, up to a few 10−4 s...
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Article
The mysterious age invariance of the planetary nebula luminosity function bright cut-off
Planetary nebulae mark the end of the active life of 90% of all stars. They trace the transition from a red giant to a degenerate white dwarf. Stellar models1,2 predicted that only stars above approximately twice...
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Article
Evolution and Mass Loss of AGB Stars in the Small Magellanic Cloud
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Article
ISO Spectroscopy of AGB Stars in the Magellanic Clouds