Abstract
R Coronae Borealis (RCB) stars are rare, and their evolutionary origin is not well understood. Since they are obscured due to formation of carbon dust around the star during their mass loss events, RCB stars can be classified as self-eclipsing variable stars . The purpose of this work is to present a new search for RCB stars in the Small Magellanic Cloud (SMC), by analysing VI data from the OGLE project.
Highlights
R Coronae Borealis (RCB) stars are red supergiant carbon stars presenting dramatic dimming episodes at irregular intervals
Our goal was to search for new RCB stars in the Small Magellanic Cloud (SMC), using V I data from the OGLE project ([10])
We found three new RCB and 63 new DY Per candidates ([7])
Summary
R Coronae Borealis (RCB) stars are red supergiant carbon stars presenting dramatic dimming episodes at irregular intervals. The dimming episodes are caused by self-obscuration by dust, occurring as a consequence of mass loss events (e.g., [1,2,3, 6] and references therein). A subclass of RCB stars called DY Persei exists. The DY Per stars tend to be cooler and have more symmetrical drops in comparison to RCBs (e.g., [1, 12], and references therein).
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