Fe/Ni ratio in the Ant Nebula Mz 3

Details Fe/Ni ratio in the Ant Nebula Mz 3 Fe/Ni ratio in the Ant Nebula Mz 3

2006-05-06

arxiv.org/abs/astro-ph/0605180v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure, to be published in the Proceedings of the IAU Symposium 234: Planetary Nebulae in Our Galaxy and Beyond, ed

Scientific paper

10.1017/S1743921306004170

We have analyzed the [Fe II] and [Ni II] emission lines in the bipolar planetary nebula Mz~3. We find that the [Fe II] and [Ni II] lines arise exclusively from the central regions. Fluorescence excitation in the formation process of these lines is negligible for this low-excitation nebula. From the [Fe II]/[Ni II] ratio, we obtain a higher Fe/Ni abundance ratio with respect to the solar value. The current result provides further supporting evidence for Mz 3 as a symbiotic Mira.

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