An All-Sky Search For R Coronae Borealis Stars in ASAS-SN

Abstract

We report the discovery of 19 new R Coronae Borealis (RCB) star and DY Per candidates with light curves from the All-Sky Automated Survey for Supernovae (ASAS-SN). We examined both an existing set of 1602 near/mid-IR selected candidates and an additional 2615 candidates selected to have near/mid-IR SEDs consistent with those of known R Coronae Borealis stars. We visually inspected the light curves for the characteristic variability of these systems.

arXiv comment9 pages, 7 figures, 3 tables. Accepted to MNRAS. Replaced with updated manuscript

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• The ASAS-SN Catalog of Variable Stars III: Variables in the Southern TESS Continuous Viewing Zone
• The ASAS-SN Catalog of Variable Stars V: Variables in the Southern Hemisphere
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• ASAS-SN Identification of FY Sct as a detached eclipsing binary system with a ~2.6 year period