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Plasma diagnostics of emission-line galaxies in SDSS

Published online by Cambridge University Press:  17 July 2013

Zhitai Zhang ,
Yanchun Liang  and
François Hammer
Zhitai Zhang
Affiliation:
National Astronomical Observatories, CAS, 20A Datun Road, 100012, Beijing, PR China email: [email protected] University of Chinese Academy of Sciences, 19A Yuquan Road, 100049, Beijing, PR China
Yanchun Liang
Affiliation:
National Astronomical Observatories, CAS, 20A Datun Road, 100012, Beijing, PR China email: [email protected]
François Hammer
Affiliation:
GEPI, Observatoire de Paris, CNRS, University Paris Diderot, 5 place Jules Janssen, 92195 Meudon, France
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Abstract

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We analyse a sample of 15,019 narrow emission-line galaxies, i.e. Seyferts, LINERs, composites and star-forming galaxies, from SDSS DR7 to study the differences between the different emission-line 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 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 339
Copyright
Copyright © International Astronomical Union 2013 

References

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