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Exozodiacal dust as a limitation to exoplanet imaging and spectroscopy

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arxiv 2503.19932 v1 pith:VULHXV3K submitted 2025-03-24 astro-ph.IM astro-ph.EP

Exozodiacal dust as a limitation to exoplanet imaging and spectroscopy

Miles H. Currie , John Debes , Yasuhiro Hasegawa , Isabel Rebollido , Virginie Faramaz , Steve Ertel , William Danchi , Bertrand Mennesson
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Mark Wyatt NASA SAG23 Members
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classification astro-ph.IM astro-ph.EP
keywords dustexozodiimagingearth-likeexoplanetsexozodiacalfutureknowledge
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In addition to planets and other small bodies, stellar systems will likely also host exozodiacal dust, or exozodi. This warm dust primarily resides in or near the habitable zone of a star, and scatters stellar light in visible to NIR wavelengths, possibly acting as a spatially inhomogeneous fog that can impede our ability to detect and characterize Earth-like exoplanets. By improving our knowledge of exozodi in the near term with strategic precursor observations and model development, we may be able to mitigate these effects to support a future search for signs of habitability and life with a direct imaging mission. This white paper introduces exozodi, summarizes its impact on directly imaging Earth-like exoplanets, and outlines several key knowledge gaps and near-term solutions to maximize the science return of future observations.

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Cited by 3 Pith papers

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

  1. SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths

    astro-ph.CO 2025-10 unverdicted novelty 7.0

    A revised zodiacal light model (ZodiSURF) adds wavelength-dependent analytical scattering phase function and albedo fitted to over 5,000 HST optical measurements, yielding ~4.5% uncertainty and revealing a 0.013 +/- 0...

  2. The exozodi spectral effect: Residual habitable zone dust may bias exoEarth characterization

    astro-ph.EP 2026-07 conditional novelty 6.0

    Residual habitable-zone dust adds continuum light that can cut apparent molecular band depths by up to 50%, forcing exozodi residual to below 0.1% of planet flux for abundance retrievals.

  3. Astrometric exoplanet detection survives solar-like stellar contamination

    astro-ph.SR 2026-05 unverdicted novelty 6.0

    Solar image analysis shows typical astrometric jitter of 0.342 μas pc from activity, below the ~3 μas Earth-planet signal at 1 pc, so stellar contamination does not prevent Earth-like exoplanet astrometry around Sun-l...