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Metallicity gradients in M31, M33, NGC 300, and Milky Way using Argon abundances

Published online by Cambridge University Press:  03 March 2020

Sheila N. Flores-Durán  and
Miriam Peña
Sheila N. Flores-Durán
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70264, 04510 Ciudad de México, México email: sflores, miriam@astro.unam.mx
Miriam Peña
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70264, 04510 Ciudad de México, México email: sflores, miriam@astro.unam.mx
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Abstract

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We studied Planetary Nebulae (PNe) metallicity gradients using Ar abundances. We compared them with H ii regions in the galaxies of the local universe M 31, M 33, NGC 300 and in the Milky Way. Galactocentric radio (RG) and chemical abundances were collected from the literature, carefully selecting an homogeneous sample for each galaxy. In these galaxies, metallicity gradients computed with PNe abundances are flatter than those of H ii regions.

Keywords

ISM: planetary nebulaegalaxies: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 268
Copyright
© International Astronomical Union 2020

References

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