Bibcode
Miszalski, B.; Woudt, P. A.; Littlefair, S. P.; Warner, B.; Boffin, H. M. J.; Corradi, R. L. M.; Jones, D.; Motsoaledi, M.; Rodríguez-Gil, P.; Sabin, L.; Santander-García, M.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 456, Issue 1, p.633-640
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2
2016
Citations
30
Refereed citations
25
Description
We report on the discovery of an eclipsing dwarf nova (DN) inside the
peculiar, bilobed nebula Te 11. Modelling of high-speed photometry of
the eclipse finds the accreting white dwarf to have a mass 1.18
M⊙ and temperature 13 kK. The donor spectral type of M2.5
results in a distance of 330 pc, colocated with Barnard's loop at the
edge of the Orion-Eridanus superbubble. The perplexing morphology and
observed bow shock of the slowly expanding nebula may be explained by
strong interactions with the dense interstellar medium in this region.
We match the DN to the historic nova of 483 CE in Orion and postulate
that the nebula is the remnant of this eruption. This connection
supports the millennia time-scale of the post-nova transition from high
to low mass-transfer rates. Te 11 constitutes an important benchmark
system for CV and nova studies as the only eclipsing binary out of just
three DNe with nova shells.