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The population of planetary nebulae near the Galactic Centre: chemical abundances

Published online by Cambridge University Press:  08 August 2017

M. Mollá ,
O. Cavichia Open the ORCID record for O. Cavichia [Opens in a new window] ,
R. D. D. Costa  and
W. J. Maciel
M. Mollá
Affiliation:
CIEMAT, Avda. Complutense 40, 28040 Madrid, Spain email: mercedes.molla@ciemat.es
O. Cavichia
Affiliation:
IFQ, Universidade Federal de Itajubá, Av. BPS, 1303, 37500-903, Itajubá-MG, Brazil
R. D. D. Costa
Affiliation:
IAG, Universidade de Sâo Paulo, 05508-900, Sâo Paulo-SP, Brazil
W. J. Maciel
Affiliation:
IAG, Universidade de Sâo Paulo, 05508-900, Sâo Paulo-SP, Brazil
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Abstract

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In this work, we report physical parameters and abundances derived for a sample of 15 high extinction planetary nebulae located in the inner 2° of the Galactic bulge, based on low dispersion spectroscopy secured at the SOAR telescope using the Goodman spectrograph. The new data allow us to extend our database including older, weaker objects that are at the faint end of the planetary nebulae luminosity function. The data provide chemical compositions for PNe located in this region of the bulge to explore the chemical enrichment history of the central region of the Galactic bulge. The results show that the abundances of our sample are skewed to higher metallicities than previous data in the outer regions of the bulge. This can indicate a faster chemical enrichment taking place at the Galactic centre.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S323: Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution , October 2016 , pp. 339 - 340
Copyright
Copyright © International Astronomical Union 2017 

References

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