HR 8799 is the benchmark young multi-planet system, hosting four directly imaged giant planets orbiting between a warm inner belt and a cold outer debris ring. However, the few-au region has remained observationally inaccessible, lying beyond the reach of conventional high-contrast imaging and challenging for radial-ve...
A. Lagrange, K. Goździewski, F. Kiefer et al.· 0 citations
Planets are rare in close (a < 10 au) binaries, consistent with millimeter surveys showing that circumbinary disks in such systems are typically fainter than disks around wide binaries or single stars. However, a few bright circumbinary disks deviate from this trend, suggesting that planet-forming reservoirs can someti...
A. Hales, J. Miley, Daniel Ramos et al.· Astrophysical Journal· 0 citations
We present high-contrast imaging observations of seven stars obtained with the Keck/NIRC2 vortex coronagraph between 2018 May and June in the L′ and Ms bands. All targets host protoplanetary disks with substructures such as gaps and cavities, potentially tracing ongoing planet formation. Our aim is to assess whether th...
A. Bernardi, A. Zurlo, L. Cieza et al.· Astrophysical Journal Letter...· 0 citations
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