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We investigate the nature of the unusual eclipsing star OGLE LMC-ECL-11893(OGLE J05172127-6900558) in the Large Magellanic Cloud recently reported byDong et al. 2014. The eclipse period for this star is 468 days, and theeclipses exhibit a minimum of ~1.4 mag, preceded by a plateau of ~0.8 mag.Spectra and optical/IR photometry are consistent with the eclipsed star being alightly reddened B9III star of inferred age ~150 Myr and mass of ~4 solarmasses. The disk appears to have an outer radius of ~0.2 AU with predictedtemperatures of ~1100-1400 K. We model the eclipses as being due to either atransiting geometrically thin dust disk or gaseous accretion disk around asecondary object; the debris disk produces a better fit. We speculate on theorigin of such a dense circumstellar dust disk structure orbiting a relativelyold low-mass companion, and on the similarities of this system to thepreviously discovered EE Cep.

Modeling Transiting Circumstellar Disks: Characterizing the Newly Discovered Eclipsing Disk System OGLE LMC-ECL-11893