The origin and evolution of warm exozodiacal dust
, 2022 Many stars show excess mid-infrared emission which is attributed to warm dust in the habitable zone of the star, known as exozodiacal dust, or exozodis for short. Such dust will be a source of noise and confusion when attempting to detect and characterise Earth-like planets.
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Dust size and spatial distributions in debris discs: predictions for exozodiacal dust dragged in from an exo-Kuiper belt [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The spectral energy distributions of some nearby stars show mid-infrared (IR) excesses from warm habitable zone dust, known as exozodiacal dust. This dust may originate in collisions in a planetesimal belt before being dragged inwards.
Jessica K Rigley, Mark C Wyatt
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Impact of hot exozodiacal dust on the polarimetric analysis of close-in exoplanets
Astronomy & Astrophysics, 2023 Context. Hot exozodiacal dust (HEZD) found around main-sequence stars through interferometric observations in the photometric bands H to L is located close to the dust sublimation radius, potentially at orbital radii comparable to those of close-in exoplanets.
K. Ollmann +3 more
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Inner mean-motion resonances with eccentric planets: a possible origin for exozodiacal dust clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 High levels of dust have been detected in the immediate vicinity of many stars, both young and old. A promising scenario to explain the presence of this short-lived dust is that these analogues to the Zodiacal cloud (or exozodis) are refilled in situ through cometary activity and sublimation. As the reservoir of comets is not expected to be replenished,
Faramaz, V. +4 more
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An 11.6 Micron Keck Search for Exo‐Zodiacal Dust [PDF]
Publications of the Astronomical Society of the Pacific, 1998 10 pages, figure1, figure2, figure3, and figures 4a ...
Kuchner, Marc J. +2 more
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Planetesimal-driven migration as an explanation for observations of high levels of warm, exozodiacal dust [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 13 pages, MNRAS ...
Bonsor, Amy +3 more
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The Astronomical JournalThe system κ Tuc A is part of a hierarchical-quintuple system and is a prime target for studies of hot-exozodiacal dust, because a time-variable near-infrared excess has been detected.
T. A. Stuber +21 more
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A Search for Exozodiacal Dust and Faint Companions Near Sirius, Procyon, and Altair with the NICMOS Coronagraph [PDF]
Publications of the Astronomical Society of the Pacific, 2000 We observed Sirius, Altair, and Procyon with the NICMOS Coronagraph on the Hubble Space Telescope to look for scattered light from exozodiacal dust and faint companions within 10 AU from these stars. We did not achieve enough dynamic range to surpass the upper limits set by IRAS on the amount of exo-zodiacal dust in these systems, but we did set strong
Kuchner, Marc J., Brown, Michael E.
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Asgard/NOTT: L-band nulling interferometry at the VLTI
Astronomy & AstrophysicsContext. The NOTT visitor instrument at the VLTI is designed to characterize hot exozodiacal dust and young Jupiter-like planets at the water snowline via L′ band nulling interferometry.
Sanny Ahmed +8 more
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Adaptive Optics Nulling Interferometric Constraints on the Mid-Infrared Exozodiacal Dust Emission around Vega [PDF]
The Astrophysical Journal, 2004 We present the results of mid-infrared nulling interferometric observations of the main-sequence star alpha Lyr (Vega) using the 6.5 m MMT with its adaptive secondary mirror. From the observations at 10.6 microns, we find that there is no resolved emission from the circumstellar environment (at separations greater than 0.8 AU) above 2.1% (3 sigma limit)
Liu, W. M. +9 more
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