620 citations · 2.2k across the 32 of their papers we have counts for
3 papers · 1 filter
A comprehensive classification of galaxies in the SDSS: How to tell true from fake AGN?
R. Cid Fernandes, G. Stasinska, A. Mateus +1
We use the W_Ha versus [NII]/Ha (WHAN) diagram to provide a comprehensive emission-line classification of SDSS galaxies. This classification is able to cope with the large populati…
Tol 2240-384 - a new low-metallicity AGN candidate
Y. I. Izotov, N. G. Guseva, K. J. Fricke +3
Active galactic nuclei (AGNs) have typically been discovered in massive galaxies of high metallicity. We attempt to increase the number of AGN candidates in low metallicity galaxie…
Beware of fake AGNs
G. Stasinska, N. Vale Asari, R. Cid Fernandes
In the BPT diagram, the distribution of the emission-line galaxies from the Sloan Digital Sky Survey (SDSS) evokes the wings of a seagull. Traditionally, galaxies in the right wing…