SMP LMC 88 is one of the planetary nebulae (PN) in the Large Magellanic Cloud. We identify in its spectrum Raman scattered O VI lines at 6825 and 7083A. This unambiguously classifies the central object of the nebula as a symbiotic star (SySt). We identified the cold component to be a K-type giant, making this the first D'-type (yellow) SySt discovered outside the Galaxy. The photometric variability in SMP LMC 88 resembles the the orbital variability of Galactic D'-type SySt with its low amplitude and sinusoidal lightcurve shape. The SySt classification is also supported by the He I diagnostic diagram.
Cite
@article{arxiv.1802.02933,
title = {A D'-type symbiotic binary in the planetary nebula SMP LMC 88},
author = {Krystian Ilkiewicz and Joanna Mikolajewska and Brent Miszalski and Szymon Kozlowski and Andrzej Udalski},
journal= {arXiv preprint arXiv:1802.02933},
year = {2018}
}
Comments
9 pages, 8 figures, accepted for publication in MNRAS