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Mapping the Physical and Chemical Conditions of the Ring Nebula

Published online by Cambridge University Press:  08 August 2017

Marcelo L. Leal-Ferreira
Affiliation:
Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands
Isabel Aleman
Affiliation:
Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands IAG-USP, Universidade de São Paulo, Brazil
Andrea Gaughan
Affiliation:
Haverford College, USA
Djazia Ladjal
Affiliation:
Gemini Observatory, Chile ANU, Australia
Toshiya Ueta
Affiliation:
University of Denver, USA
Samuel Kerber
Affiliation:
University of Denver, USA
Blair Conn
Affiliation:
Gemini Observatory, Chile ANU, Australia
Rhiannon Gardiner
Affiliation:
University of Denver, USA
Alexander G. G. M. Tielens
Affiliation:
Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands
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Abstract

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We observed the Planetary Nebula NGC 6720 with the Gemini Telescope and the Gemini Multi-Object Spectrographs. We obtained spatial maps of 36 emission-lines in the wavelength range between 3600 Å and 9400 Å. We derived maps of c(Hβ), electronic densities, electronic temperatures, ionic and elemental abundances, and Ionization Correction Factors (ICFs) in the source and investigated the mass-loss history of the progenitor. The elemental abundance results indicate the need for ICFs based on three-dimensional photoionization models.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2017 

References

Aleman, I., Leal-Ferreira, M. L., et al. in prep., A&A Google Scholar
De Robertis, M., Dufour, J., & Hunt, R., 1987, J. R. Astron. Soc. Canada, 81, 195 Google Scholar
Kingsburgh, R. & Barlow, M., 1994, MNRAS, 271, 257 CrossRefGoogle Scholar
Leal-Ferreira, M. L., Gonçalves, D. R., Monteiro, H., & Richards, J. W., 2011, MNRAS, 411, 1395 CrossRefGoogle Scholar
Monteiro, H., Gonçalves, D. R., Leal-Ferreira, M. L., & Corradi, R. L. M, 2013, A&A, 560, 102 Google Scholar
Shaw, R. A. & Dufour, R. J, 1995, PASP, 107, 896 CrossRefGoogle Scholar
Walsh, J., Monreal-Ibero, A., Barlow, M., Ueta, T., Wesson, R., & Zijlstra, A. 2016 A&A, 588, 106 Google ScholarPubMed
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