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The Fe/Ni ratio in the Ant Nebula Mz 3

Published online by Cambridge University Press:  15 December 2006

Y. Zhang  and
X.-W. Liu
Y. Zhang
Affiliation:
Department of Astronomy, Peking University email: [email protected]; [email protected]
X.-W. Liu
Affiliation:
Department of Astronomy, Peking University email: [email protected]; [email protected]
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Abstract

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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 than the solar value. The current result provides further supporting evidence for Mz 3 as a symbiotic Mira.

Keywords

ISM: abundancesplanetary nebulae: individual: Mz 3
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 547 - 548
Copyright
© 2006 International Astronomical Union