Chemical abundance behavior of type I planetary nebulae |
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| Authors: | M Faúndez-Abans J L Jiménez O |
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| Institution: | (1) Departamento de Física, Universidad de Santiago de Chile, Santiago, Chile;(2) Departamento de Física, Universidad de Santiago de Chile, Santiago, Chile;(3) Escuela de Construcción Civil, Universidad Nacional  Andrés Bello , Santiago, Chile;(4) CNPq/Laboratorio Nacional de Astrofísica, Brasil |
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| Abstract: | In this work 13 Planetary Nebulae have been classified as Type I according to Peimbert's criteria (Peimbert, 1978). These objects have been added to a previous sample (Maciel and Faúndez-Abans, 1985) and diagrams of O/H versus N/H, S/H, Ne/H and Ar/H, as well as N/H versus S/H, Ne/H and Ar/H have been drawn. All of them exhibit a tendency for linear correlation; moreover, the behavior of O and N versus Ar and S are very similar, with approximately the same slope. When the excitation class parameter was included in the diagrams, no clear tendency can be discerned, for any class. |
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