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(Sub)mm-Wavelength Observations of Pre-Planetary Nebulae and Young Planetary Nebulae

Centro de Astrobiología (CSIC-INTA), Camino Bajo del Castillo s/n, Urb. Villafranca del Castillo, Villanueva de la Cañada, E-28691 Madrid, Spain
Galaxies 2020, 8(1), 21; https://doi.org/10.3390/galaxies8010021
Received: 17 February 2020 / Revised: 24 February 2020 / Accepted: 28 February 2020 / Published: 10 March 2020
(This article belongs to the Special Issue Workplans II: Workshop for Planetary Nebula Observations)
This is a non-comprehensive review of observations of pre-Planetary Nebulae (pPNe) and young Planetary Nebulae (yPNe) at (sub)mm-wavelengths, a valuable window for probing multi-phased gas and dust in these objects. This contribution focuses on observations of molecular lines (from carbon monoxide—CO—and other species), and briefly at the end, on hydrogen radio recombination lines from the emerging H ii regions at the center of yPNe. The main goal of this contribution is to show the potential of (sub)mm-wavelength observations of pPNe/yPNe to help the community to devise and develop new observational projects that will bring us closer to a better understanding of these latest stages of the evolution of low-to-intermediate (∼0.8–8 M ) mass stars. View Full-Text
Keywords: AGB and post-AGB stars; circumstellar matter; winds and outflows; mass-loss; jets AGB and post-AGB stars; circumstellar matter; winds and outflows; mass-loss; jets
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Sánchez Contreras, C. (Sub)mm-Wavelength Observations of Pre-Planetary Nebulae and Young Planetary Nebulae. Galaxies 2020, 8, 21.

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