We report the serendipitous discovery of a disk-eclipse system OGLE-LMC-ECL-11893. The eclipse occurs with a period of 468 days, a duration of about 15 days and a deep (up to \Delta I ~1.5), peculiar and asymmetric profile. A possible origin of such an eclipse profile involves a circumstellar disk. The presence of the disk is confirmed by the H-alpha line profile from the follow-up spectroscopic observations, and the star is identified as Be/Ae type. Unlike the previously known disk-eclipse candidates (Epsilon Aurigae, EE Cephei, OGLE-LMC-ECL-17782, KH 15D), the eclipses of OGLE-LMC-ECL-11893 retain the same shape throughout the span of ~17 years (13 orbital periods), indicating no measurable orbital precession of the disk.
@article{arxiv.1401.1195,
title = {OGLE-LMC-ECL-11893: The discovery of a long-period eclipsing binary with a circumstellar disk},
author = {Subo Dong and Boaz Katz and Jose L. Prieto and Andrzej Udalski and Szymon Kozlowski and R. A. Street and D. M. Bramich and Y. Tsapras and M. Hundertmark and C. Snodgrass and K. Horne and M. Dominik and R. Figuera Jaimes},
journal= {arXiv preprint arXiv:1401.1195},
year = {2014}
}