3 papers
astro-ph.CO2011
Narrow-Line AGNs: confirming the relationship between metallicity and accretion rate
D. M. Neri-Larios, R. Coziol, J. P. Torres-Papaqui +4
We have selected a sample of 292 SDSS Narrow-Emission-Line galaxies known to have formed and evolved in relative isolation to study the nature and origin of the AGN phenomenon. The…
astro-ph.CO2010
Relation between activity, morphology and environment for a large sample of SDSS galaxies
R. A. Ortega-Minakata, J. P. Torres-Papaqui, H. Andernach +2
We apply a stellar population synthesis code to the spectra of a large sample of SDSS galaxies to classify these according to their activity (using emission-line diagnostic diagram…
astro-ph.GA2010
Low Luminosity AGN candidates in SDSS
J. P. Torres-Papaqui, R. Coziol, J. M. Islas-Islas +2
In a sample of 476931 NELGs obtained from the SDSS DR5 data we find that in 22% of the galaxies the emission line [OIII]5007, H, or both, are missing. The nature of the activ…