Close binarity can play a significant role in the shaping of planetary nebulae (PNe) as the system evolves through the common-envelope phase. We present the detection of two of the shortest orbital periods among PN binary central stars. These are Hen 2-428, a bipolar PN, and V458 Vul, a recent nova surrounded by a mildly bipolar planetary nebula. The properties of the central stars of these systems, of their nebulae and their possible fate are discussed.
@article{arxiv.1009.3055,
title = {The binary central stars of PNe with the shortest orbital periods},
author = {M. Santander-Garcia and P. Rodriguez-Gil and D. Jones and R. L. M. Corradi and B. Miszalski and S. Pyrzas and M. M. Rubio-Diez},
journal= {arXiv preprint arXiv:1009.3055},
year = {2010}
}
Comments
6 pages, 2 figures, to appear in the proceedings of the Asymmetric Planetary Nebulae V conference