226 citations · 1.3k across the 51 of their papers we have counts for
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astro-ph.SR2013★ 15 cited
Alignment of the Angular Momentum Vectors of Planetary Nebulae in the Galactic Bulge
B. Rees, A. A. Zijlstra
We use high-resolution H α images of 130 planetary nebulae (PNe) to investigate whether there is a preferred orientation for PNe within the Galactic Bulge. The orientations of the…
astro-ph.GA2013★ 4 cited
3He: Does the problem persists?
L. Guzman-Ramirez, J. E. Pineda, A. A. Zijlstra +2
To understand the chemical evolution of the Galaxy, we need to understand the contribution of PNe in the 3He abundance. 3He abundances have been detected only in a couple of PNe, t…