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Discovery of a large dust disk around the nearby star AU Microscopium

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arxiv astro-ph/0403132 v1 pith:RG2MZWW5 submitted 2004-03-05 astro-ph

Paul Kalas (UC Berkeley) , Michael C. Liu (IfA , U. Hawaii) , Brenda C. Matthews (UC Berkeley) This is my paper · ORCID
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keywords diskduststardiscoverymicroscopiumnearbyanotheraround
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We present the discovery of a circumstellar dust disk surrounding AU Microscopium (AU Mic, GJ 803, HD 197481). This young M star at 10 parsec has the same age and origin as beta Pictoris, another nearby star surrounded by a dust disk. The AU Mic disk is detected between 50 AU and 210 AU radius, a region where dust lifetimes exceed the present stellar age. Thus, AU Mic is the nearest star where we directly observe the solid material required for planet formation. Since 85% of stars are M-type, the AU Mic disk provides new clues on how the majority of planetary systems might form and evolve.

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Cited by 4 Pith papers

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

  1. Three new exoplanet systems from the Dispersed Matter Planet Project

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

    DMPP-7 hosts a confirmed 0.72 Saturn-mass planet at P=4.93 days; HD 67200 and HD 2134 show moderate evidence for 2.7-2.8 day low-mass candidates that remain unconfirmed.

  2. The Longest-period Young Transiting Exoplanets. A Duo of Puffy Giants inside a Debris Disk

    astro-ph.EP 2026-07 conditional novelty 6.0 of 10

    HD 114082 hosts two puffy, moderate-to-low-mass giants on nearly circular, coplanar, near-resonant orbits of 225.55 and ~314 days, the longest-period young transiting exoplanets known.

  3. Unstable magnetospheric accretion on the T Tauri star TW Hya

    astro-ph.SR 2026-07 accept novelty 4.5 of 10

    TW Hya’s large-scale field is a ~0.83 kG tilted dipole that varies yearly; accretion is unstable (rmag/rcor ≈ 0.33–0.40) and no close-in planet is detected above ~0.3–1 Mjup.

  4. CHEOPS photometry from 2024 reveals a reversal in the transit-timing variations of AU Mic c

    astro-ph.EP 2026-08 conditional novelty 4.0 of 10

    2024 CHEOPS transit timings of AU Mic c show a reversal of the 2023 timing offset, indicating the large deviation was not sustained.

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