Ogle-lmc-ecl-11893: the Discovery of a Long-period Eclipsing Binary With a Circumstellar Disk
Year: 2014
Type: article
Abstract: 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 Δ m 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-α line profile from the follow-up spectroscopic observations, and the star is identified as Be/Ae type. Unlike the previously known disk–eclipse candidates, the eclipses of OGLE-LMC-ECL-11893 retain the same shape throughout the span of ∼17 yr (13 orbital periods), indicating no measurable orbital precession of the disk.
Source: The Astrophysical Journal
Authors: Subo Dong, Boaz Katz, Jose L. Prieto, Andrzej Udalski, Szymon Kozlowski, R. A. Street, D. M. Bramich, Y. Tsapras, M. Hundertmark, C. Snodgrass, K. Horne, M. Dominik, R. Figuera Jaimes
Institutions: Peking University, Institute for Advanced Study, Princeton University, University of Warsaw, Las Cumbres Observatory Global Telescope Network, Qatar Foundation, Queen Mary University of London, University of St Andrews, Max Planck Institute for Solar System Research, European Southern Observatory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: Optical Gravitational Lensing Experiment: New Frontiers in Observational Astronomy, Astrophysics at St Andrews: 2012-2014, G3207356259, Ice: Small and Near, Distant and Large. Understanding planet formation through observation of Solar-System minor bodies and extra-solar planets, G393177772, Astronomy and Planetary Sciences at the Open University (APSOU), G5702163051, G7024351342, G739158838, G8476363046, G988696487
OpenAlex ID: W2047963612