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Plasma diagnostics of emission-line galaxies in SDSS

Published online by Cambridge University Press:  06 January 2014

Zhitai Zhang ,
Yanchun Liang  and
François Hammer
Zhitai Zhang
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China University of Chinese Academy of Sciences, Beijing 100049, China
Yanchun Liang
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
François Hammer
Affiliation:
GEPI, Observatoire de Paris, Section de Meudon, 92195 Meudon, France
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Abstract

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Sample contains 15 019 narrow emission-line galaxies, i.e. Seyferts, LINERs, composites and star-forming galaxies, from SDSS DR7 for systematically studying differences between different classes. We report two clear sequences of electron temperature (Te) and density (ne): Te-LINER ≳ Te-composite > Te-Seyfert > Te-star-forming and ne-Seyfert ≳ ne-LINER > ne-composite > ne-star-forming. General transitions of ne and Te from central regions to disks are quantitatively confirmed.

Keywords

galaxies: activegalaxies: ISMgalaxies: Seyfertgalaxies: starburstsurveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 455
Copyright
Copyright © International Astronomical Union 2014 

References

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