205 citations · 1.5k across the 63 of their papers we have counts for
6 papers · 1 filter
Photometric redshifts for the S-PLUS Survey: is machine learning up to the task?
E. V. R. Lima, L. Sodré, C. R. Bom +14
The Southern Photometric Local Universe Survey (S-PLUS) is a novel project that aims to map the Southern Hemisphere using a twelve filter system, comprising five broad-band SDSS-li…
Chemical abundances in Seyfert galaxies -- VIII. Argon abundance estimates
A. F. Monteiro, O. L. Dors
For the first time, the argon abundance relative to hydrogen abundance (Ar/H) in the narrow line region of a sample of Seyfert 2 nuclei has been derived. In view of this, optical n…
Chemical abundances in Seyfert galaxies -- VII. Direct abundance determination of neon based on optical and infrared emission lines
Mark Armah, O. L. Dors, C. P. Aydar +6
For the first time, neon abundance has been derived in the narrow line region from a sample of Seyfert~2 nuclei. In view of this, we compiled from the literature fluxes of optical…
Chemical abundances in Seyfert galaxies VI. Empirical abundance calibration
Dors, O. L
We derived a bi-dimensional calibration between the emission line ratios R23=([O II]3726+3729+[O II]4959+5007)/Hb, P=[([O II]4959+5007)/Hb]/R23 and the oxygen abundance relative to…
Electron temperature fluctuations in Seyfert galaxies
Rogemar A. Riffel, Oli L. Dors, Angela Krabbe +1
We use Gemini GMOS-IFU observations of three luminous nearby Seyfert galaxies (Mrk79, Mrk348 and Mrk607) to estimate the electron temperature () fluctuations in the inne…
Chemical Abundance of the LINER galaxy UGC 4805 with SDSS-IV MaNGA
A. C. Krabbe, C. B. Oliveira, I. A. Zinchenko +5
Chemical abundance determinations in Low-Ionization Nuclear Line Regions (LINERs) are especially complex and uncertain because the nature of the ionizing source of this kind of obj…