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Summary MIRI imaging at 15 & 23 micron reveals never-before-seen structures within & around the Beta Pic disk. A curved “cat’s tail” extending from the disk plane, and a diffuse fan of clumpy nebulosity A promising hypothesis is that we are seeing streamers of debris in the aftermath of a giant collision, being blown out by radiation pressure acting on dust, plausibly highly porous silicate dust. Dynamical modeling and further analyses are ongoing. These new features reinforce many prior lines of evidence for a recent massive collision. et al. in prep. NIRCam coronagraphy allows characterization of Beta Pic b from 1.8 - 4.5 microns, and brings detection limits on additional outer planets down to 0.1 Jupiter mass.

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Summary MIRI imaging at 15 & 23 micron reveals never-before-seen structures within & around the Beta Pic disk. A curved “cat’s tail” extending from the disk plane, and a diffuse fan of clumpy nebulosity A promising hypothesis is that we are seeing streamers of debris in the aftermath of a giant collision, being blown out by radiation pressure acting on dust, plausibly highly porous silicate dust. Dynamical modeling and further analyses are ongoing. These new features reinforce many prior lines of evidence for a recent massive collision. et al. in prep. NIRCam coronagraphy allows characterization of Beta Pic b from 1.8 - 4.5 microns, and brings detection limits on additional outer planets down to 0.1 Jupiter mass.
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Kelly Lepo (kellylepo@astrodon.social)'s status on Friday, 15-Sep-2023 02:19:13 JST Kelly Lepo
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New observations of the debris desk around the star Beta Pictoris from Marshal Perrin. They see a new feature they are calling the "cat's tail" which may be dust being blow out of the system after a collision of two planetesimals.
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