Sakurai's object: a [WC] star in a new bipolar nebula after a VLTP
Solar and Stellar Astrophysics
2024-09-23 v1 Astrophysics of Galaxies
High Energy Astrophysical Phenomena
Abstract
Optical spectra of the Very Late Thermal Pulse (VLTP) object V4334 Sgr have shown a rapidly changing spectrum resulting from shocks in the outflow, which created a new bipolar nebula inside the old nebula. We see C II and C III emission lines emerging typical of a [WC 11-10]-type star. The strong increase of [O III] and [S III] emission lines indicate the possible onset of photoionisation in the new ejecta.
Cite
@article{arxiv.2409.13289,
title = {Sakurai's object: a [WC] star in a new bipolar nebula after a VLTP},
author = {Griet Van de Steene and Peter van Hoof and Stefan Kimeswenger and Marcin Hajduk and Daniel Tafoya and Jesus Toala and Albert Zijlstra and Daniela Barria},
journal= {arXiv preprint arXiv:2409.13289},
year = {2024}
}
Comments
2 pages, 3 figures, accepted for publication in the proceedings of IAU Symposium 384: Planetary Nebulae: a Universal Toolbox in the Era of Precision Astrophysics