16202
收藏DataCite Commons2023-04-21 更新2025-04-15 收录
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http://esdcdoi.esac.esa.int/doi/html/data/astronomy/hst/16202.html
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The solar analog star HD 53143 hosts a tenuous disk of cold material analogous to a more massive version of our solar system.s Kuiper Belt. Puzzlingly comma unlike every other debris disk observed thus far comma existing low-S-N visible wavelength images of HD 53143 show that the micron-sized dust around HD 53143 does not resemble a circumstellar ring--rather comma it looks like two isolated clumps of material. New ALMA observations show that the underlying distribution of larger planetesimals is indeed ring-like comma but very eccentric and mis-aligned with the visible wavelength clumps. Further comma the ALMA observations reveal 5-sigma excesses just interior to the circumstellar ring comma suggesting structure in the planetesimal population that may be connected to the visible wavelength clumps. We propose high-S-N coronagraphic imaging of HD 53143 using HST STIS to reveal the peculiar nature of this unique debris disk and search for signs of planet-induced disk structure or collisional activity. In addition to revealing the structure of the disk comma these high-S-N images will allow us to measure the optical properties of the debris disk dust to constrain its composition comma size distribution comma and provide critical measurements of debris disk properties that will inform future exoplanet-imaging missions.
提供机构:
European Space Agency
创建时间:
2023-04-21



