Vol. 555
In section 10. Planets and planetary systems

DUst around NEarby Stars. The survey observational results

Debris discs result from the planet formation process. Their solar system counterparts are the asteroid and Edgeworth-Kuiper belts. The DUNES survey is aimed at detecting extra-solar analogues to the Edgeworth-Kuiper belt around solar-type stars. The authors used Herschel/PACS to observe a sample of nearby FGK stars. Data at 100 and 160 μm were obtained, complemented in some cases with additional observations using SPIRE. Debris discs were detected at a fractional luminosity level down to several times that of the Edgeworth-Kuiper belt. The incidence rate of discs around the DUNES stars is increased from a rate of ~12.1% ± 5% before Herschel to ~20.2% ± 2%. A significant fraction (~52%) of the discs are resolved, which represents an considerable increase over the previously known resolved discs. Some stars are associated with faint far-IR excesses that the authors attribute to a new class of cold discs.