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Dust formation during the interaction of binary stars by common envelope

Published online by Cambridge University Press:  06 October 2025

Luis C. Bermúdez-Bustamante Open the ORCID record for Luis C. Bermúdez-Bustamante [Opens in a new window] ,
Orsola De Marco Open the ORCID record for Orsola De Marco [Opens in a new window] ,
Lionel Siess Open the ORCID record for Lionel Siess [Opens in a new window] ,
Daniel J. Price Open the ORCID record for Daniel J. Price [Opens in a new window] ,
Miguel González-Bolívar Open the ORCID record for Miguel González-Bolívar [Opens in a new window] ,
Mike Y. M. Lau Open the ORCID record for Mike Y. M. Lau [Opens in a new window] ,
Chunliang Mu Open the ORCID record for Chunliang Mu [Opens in a new window] ,
Ryosuke Hirai Open the ORCID record for Ryosuke Hirai [Opens in a new window] ,
Taïssa Danilovich Open the ORCID record for Taïssa Danilovich [Opens in a new window]  and
Mansi Kasliwal Open the ORCID record for Mansi Kasliwal [Opens in a new window]
Luis C. Bermúdez-Bustamante
Affiliation:
School of Mathematical and Physical Sciences, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia Astrophysics and Space Technologies Research Centre, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia
Orsola De Marco
Affiliation:
School of Mathematical and Physical Sciences, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia Astrophysics and Space Technologies Research Centre, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia
Lionel Siess
Affiliation:
Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles (ULB), CP 226, 1050 Brussels, Belgium
Daniel J. Price
Affiliation:
School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia
Miguel González-Bolívar
Affiliation:
School of Mathematical and Physical Sciences, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia Astrophysics and Space Technologies Research Centre, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia
Mike Y. M. Lau
Affiliation:
School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery, Australia Heidelberger Institut für Theoretische Studien, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany
Chunliang Mu
Affiliation:
School of Mathematical and Physical Sciences, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia Astrophysics and Space Technologies Research Centre, Macquarie University, Balaclava Road, North Ryde, Sydney, NSW 2109, Australia
Ryosuke Hirai
Affiliation:
School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery, Australia
Taïssa Danilovich
Affiliation:
School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Clayton 3800, Australia
Mansi Kasliwal
Affiliation:
Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
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Abstract

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We performed numerical simulations of the common envelope (CE) interaction between two intermediate-mass asymptotic giant branch (AGB) stars and their low-mass companions. For the first time, formation and growth of dust in the envelope is calculated explicitly. We find that the first dust grains appear as early as ∼1–3 yrs after the onset of the CE, and are smaller than grains formed later. As the simulations progress, a high-opacity dusty shell forms, resulting in the CE photosphere being up to an order of magnitude larger than it would be without the inclusion of dust. At the end of the simulations, the total dust yield is ∼8.2×10−3 M⊙ (∼2.2×10−2 M⊙) for a CE with a 1.7 M⊙ (3.7 M⊙) AGB star. Dust formation does not substantially lead to more mass unbinding or substantially alter the orbital evolution.

Keywords

stars: AGB and post-AGBstars: windsoutflows(stars:) binaries (including multiple): close

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S384: Planetary Nebulae: A Universal Toolbox in the Era of Precision Astrophysics , December 2023 , pp. 269 - 275
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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