A Preferred Orientation Angle for Bipolar Planetary Nebulae
Solar and Stellar Astrophysics
2020-03-23 v2
Abstract
We present preliminary results from measuring Galactic orientation angles of 800 elliptical and bipolar Planetary Nebulae (PNe) in the Hong Kong/Australian Astronomical Observatory/Strasbourg Observatory H-alpha Planetary Nebula (HASH) research platform and database (Parker et al. [1], [2]). For elliptical PNe the distribution of orientation angles is found to be essentially uniform. However, for bipolar PNe there is statistically significant evidence for preferred orientation angles (as tentatively reported before with smaller samples) across the whole Galaxy.
Cite
@article{arxiv.2003.08067,
title = {A Preferred Orientation Angle for Bipolar Planetary Nebulae},
author = {Andreas Ritter and Quentin A. Parker},
journal= {arXiv preprint arXiv:2003.08067},
year = {2020}
}
Comments
I just discovered a bug in my program, the results are wrong