Kuiper belt structure around nearby super-Earth host stars

作者: Grant M. Kennedy , Luca Matrà , Maxime Marmier , Jane S. Greaves , Mark C. Wyatt

DOI: 10.1093/MNRAS/STV511

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摘要: We present new observations of the Kuiper belt analogues around HD 38858 and 20794, hosts super-Earth mass planets within 1 au. As two four nearby G-type stars (with 69830 61 Vir) that form basis a possible correlation between low-mass debris disc brightness, these systems are particular interest. The is well resolved with Herschel we constrain geometry radial structure. also probable JCMT sub-mm continuum detection CO J=2-1 upper limit. 20794 much fainter appears marginally Herschel, constrained to be less extended than discs Vir 38858. set limits on location hot dust recently detected near-IR interferometry. HARPS unseen in systems, ruling out additional super-Earths few au, Saturn-mass 10 consider structure three bel t (HD has only warm detection), concluding have greater extent 20794. speculate width related

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