Tisserand, Patrick2015-12-100004-6361http://hdl.handle.net/1885/67560Context. R Coronae Borealis stars (RCBs) are hydrogen-deficient and carbon-rich supergiant stars. They are very rare, with only ∼50 actually known in our Galaxy. Interestingly, RCBs are strongly suspected of being the evolved merger product of two whiteCatalogsCircumstellar matterInfrared: starsStars: AGB and post-AGBStars: carbonAmorphous carbonColorGalaxiesHydrogenInfrared devicesStars CatalogsCircumstellar matterInfrared: starsStars: AGB and post-AGBStars: carbonTracking down R Coronae Borealis stars from their mid-infrared WISE colours201210.1051/0004-6361/2011178742016-02-24