A Preferred Orientation Angle for Bipolar Planetary Nebulae

2020/03/18 by Andreas Ritter, Quentin A. Parker, Ritter, Andreas +1
Physics and Astronomy · #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR

paper · pdf · doi:10.48550/arxiv.2003.08067

I just discovered a bug in my program, the results are wrong

arxiv created 2020/03/20 · arxiv updated 2020/03/23

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.

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