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(Sub)stellar companions shape the winds of evolved stars

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arxiv 2009.11694 v2 pith:3YZ376UB submitted 2020-09-24 astro-ph.SR astro-ph.GA

L. Decin , M. Montargès , A.M.S. Richards , C.A. Gottlieb , W. Homan , I. McDonald , I. El Mellah , T. Danilovich
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S.H.J. Wallström A. Zijlstra A. Baudry J. Bolte E. Cannon E. De Beck F. De Ceuster A. de Koter J. De Ridder S. Etoka D. Gobrecht M. Gray F. Herpin M. Jeste E. Lagadec P. Kervella T. Khouri K. Menten T.J. Millar H.S.P. Müller J.M.C. Plane R. Sahai H. Sana M. Van de Sande L.B.F.M. Waters K.T Wong J. Yates
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classification astro-ph.SRastro-ph.GA
keywords starsbinarywindsevolutioninteractionsnonsphericalobservedplanetary
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Binary interactions dominate the evolution of massive stars, but their role is less clear for low- and intermediate-mass stars. The evolution of a spherical wind from an asymptotic giant branch (AGB) star into a nonspherical planetary nebula (PN) could be due to binary interactions. We observed a sample of AGB stars with the Atacama Large Millimeter/submillimeter Array (ALMA) and found that their winds exhibit distinct nonspherical geometries with morphological similarities to planetary nebulae (PNe). We infer that the same physics shapes both AGB winds and PNe; additionally, the morphology and AGB mass-loss rate are correlated. These characteristics can be explained by binary interaction. We propose an evolutionary scenario for AGB morphologies that is consistent with observed phenomena in AGB stars and PNe.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dust production in the harsh environment of Sgr A* - MIRI/JWST observation of the O-rich asymptotic giant branch star IRS~3

    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    IRS 3 is an oxygen-rich AGB star with a multi-shell dusty envelope containing silicates, alumina, and water, at 0.17 pc from Sgr A*.

  2. HI envelope around the carbon star V420 Vul

    astro-ph.SR 2026-08 conditional novelty 6.0 of 10

    An extended ~20 pc HI structure around the carbon-rich Mira V420 Vul shows symmetric kinematics centered on the star, interpreted as a stellar wind imprint on a porous interstellar cloud.

  3. A catalogue of high angular resolution and contrast polarimetric maps of 45 nearby AGB stars with SPHERE/ZIMPOL

    astro-ph.SR 2026-08 conditional novelty 5.0 of 10

    Uniformly reduced SPHERE/ZIMPOL polarization maps of 45 AGB stars reveal 16 resolved dust envelopes, three new, but the proposed target-selection criteria are partially circular and in-sample.

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