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May 21, 2026

Destructuring the disk of AB Aurigae: Dynamics and accretion

Anthony Boccaletti Emmanuel Di Folco Anne Dutrey Tang Ya-Wen Stephane Guilloteau Thomas Collin-Dufresne Anne-Marie Lagrange Eric Pantin Jeffrey S. Bary N. Huélamo J. Varga Julien Milli Vincent Piétu William Danchi Bin Ren Clément Baruteau Mickael Bonnefoy Tracy Beck Maud Langlois Sylvestre Lacour Bruno Lopez Alexis Matter Julien Woillez Florentin Millour Matthis Houllé Philippe Berio

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Key Points

This study aims to analyze the dynamics of the AB Aurigae disk and identify sources of iron emission to understand mass accretion rates.
Conducted near-IR polarized imaging using SPHERE/IRDIS over three epochs spanning 3.85 years.
Developed a method to measure disk rotation across varying radii from ∼25 au to 400 au.
Performed photometric and orbital analyses on specific features and compact sources.
The disk globally follows Keplerian rotation but shows deviations within 60 au, with a maximum deviation of ∼12%.
Accretion estimates suggest possible masses ranging from 5 to 20 Jupiter masses, based on different accretion models.
The study highlights complex interactions possibly due to protoplanets affecting the disk dynamics.

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Implication

Reveals dynamics and accretion mechanisms in the disk around AB Aurigae, suggesting ongoing planet formation.

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Cite This Study

Boccaletti et al. (2026) studied this question.

synapsesocial.com/papers/6a17dd123fad632b0f9d9d3c https://doi.org/10.1051/0004-6361/202659736/pdf

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