Plasma diagnostics of emission-line galaxies in SDSS
Abstract
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 (T e ) and density (n e ): T e-LINER >~ T e-composite > T e-Seyfert > T e-star-forming and n e-Seyfert >~ n e-LINER > n e-composite > n e-star-forming . General transitions of n e and T e from central regions to disks are quantitatively confirmed.
- Publication:
-
Setting the scene for Gaia and LAMOST
- Pub Date:
- January 2014
- DOI:
- Bibcode:
- 2014IAUS..298..455Z
- Keywords:
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- galaxies: active;
- galaxies: ISM;
- galaxies: Seyfert;
- galaxies: starburst;
- surveys