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Late stages of stellar evolution - Herschel's contributions

Decin, Leen

Cool objects glow in the infrared. The gas and solid-state species that escape the stellar gravitational attraction of evolved late-type stars in the form of a stellar wind are cool, with temperatures typically ≲1500 K, and can be ideally studied in the infrared. These stellar winds create huge extended circumstellar envelopes with extents approac…

The first results from the Herschel-HIFI mission

van der Tak, Floris

This paper contains a summary of the results from the first years of observations with the HIFI instrument onboard ESA's Herschel space observatory. The paper starts by outlining the goals and possibilities of far-infrared and submillimeter astronomy, the limitations of the Earth's atmosphere, and the scientific scope of the Herschel-HIFI mission.…