Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-11-20
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
8 pages, 2 figures, to appear in XIII Latin American Regional IAU Meeting
Scientific paper
We have used the diagnostic diagram that compares the ratio of emission lines [NII]\lambda6584/H\alpha with the equivalent width of [NII]$\lambda$6584, as proposed by Coziol et al. (1998), to determine the source of ionization of SDSS NELGs that cannot be classified by standard diagnostic diagrams, because the emission line [OIII]$\lambda$5007, H\beta, or both, are missing. We find these galaxies to be consistent with low luminosity AGNs, suggesting that this characteristic is the signature of the LLAGNs in the nearby Universe.
Coziol Roger
Islas-Islas J. M.
Neri-Larios D. M.
Ortega-Minakata R. A.
Torres-Papaqui Juan Pablo
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