| Autor: |
Dong, Subo, Katz, Boaz, Prieto, Jose L., Udalski, Andrzej, Kozlowski, Szymon, Street, R. A., Bramich, D. M., Tsapras, Y., Hundertmark, M., Snodgrass, C., Horne, K., Dominik, M., Jaimes, R. Figuera |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
2014, ApJ, 788, 41 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/0004-637X/788/1/41 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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