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Galaxies 2018, 6(3), 94;

ALMA’s Acute View of pPNe: Through the Magnifying Glass... and What We Found There

Centro de Astrobiología (CSIC-INTA), Camino Bajo del Castillo s/n, Urb. Villafranca del Castillo, 28691 Villanueva de la Cañada, Spain
Observatorio Astronómico de Madrid, Observatorio Astronómico Nacional (IGN), Alfonso XII No 3, 28014 Madrid, Spain
Centro de Investigaciones de Ciencias Geográficas y Astronomía, Observatorio Astronómico Nacional (IGN), Ap 112, 28803 Alcalá de Henares, Spain
Institut de Radioastronomie Millimetrique, 300 rue de la Piscine, 38406 Saint Martin d’Heres, France
Author to whom correspondence should be addressed.
Received: 28 June 2018 / Revised: 18 August 2018 / Accepted: 20 August 2018 / Published: 4 September 2018
(This article belongs to the Special Issue Asymmetric Planetary Nebulae VII)
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We present recent Atacama Large Millimeter/submillimeter Array (ALMA)-based studies of circumstellar envelopes (CSEs) around Asymptotic Giant Branch (AGB) stars and pre-Planetary Nebulae (pPNe). In only a few years of operation, ALMA is revolutionising the field of AGB-to-PN research by providing unprecedentedly detailed information on the complex nebular architecture (at large but also on small scales down to a few ∼10 AU from the centre), dynamics and chemistry of the outflows/envelopes of low-to-intermediate mass stars in their late stages of the evolution. Here, we focus on continuum and molecular line mapping studies with high angular resolution and sensitivity of some objects that are key to understanding the complex PN-shaping process. In particular, we offer (i) a brief summary of ALMA observations of rotating disks in post-AGB objects and (ii) report on ALMA observations of OH 231.8+4.2 providing the most detailed and accurate description of the global nebular structure and kinematics of this iconic object to date. 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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Contreras, C.S.; Alcolea, J.; Bujarrabal, V.; Castro-Carrizo, A. ALMA’s Acute View of pPNe: Through the Magnifying Glass... and What We Found There. Galaxies 2018, 6, 94.

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