144 citations · 427 across the 9 of their papers we have counts for
9 papers
Identifying AGNs from X-ray detections-I: Metallicity calibrations in AGNs with X-ray luminosity as the primary input parameter
Mark Armah, O. L. Dors, Rogério Riffel +4
We present the first semi-empirical strong-line calibrations to determine metallicity in Active Galactic Nuclei (AGNs) that use the directly observable X-ray luminosity (Lx) instea…
The intracluster light analysis of the most evolved systems of galaxies: fossil groups
Nícolas O. L. de Oliveira, Yolanda Jiménez-Teja, Renato A. Dupke +7
We present the analysis of the intracluster light (ICL) in three fossil groups (FG), RXJ085640.72+055347.36, RX J1136+0713, and RX J1410+4145, at z ~ 0.1. We used two optical broad…
New clues on the extended HeII ionization in IZw18 from GTC/MEGARA and JWST/MIRI
A. Arroyo-Polonio, C. Kehrig, J. M. Vílchez +5
IZw18 is one of the lowest-metallicity star-forming galaxies known at z0, considered a unique local analogue of the first galaxies. The origin of its hard ionizing continuum,…
Unraveling the Kinematics of IZw18: A Detailed Study of Ionized Gas with MEGARA/GTC
Antonio Arroyo-Polonio, Carolina Kehrig, Jorge Iglesias Paramo +6
This study delves into the intricate kinematic behavior of ionized gas within IZw18, a galaxy known for its remarkably low metallicity and proximity. Leveraging data from MEGARA/GT…
SIGNALS: I. Survey Description
L. Rousseau-Nepton, R. P. Martin, C. Robert +60
SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing program designed to investigate massive star formation and HII regions in a sam…
Aperture effects on the oxygen abundance determinations from CALIFA data
J. Iglesias-Páramo, J. M. Vílchez, F. F. Rosales-Ortega +23
This paper aims at providing aperture corrections for emission lines in a sample of spiral galaxies from the Calar Alto Legacy Integral Field Area Survey (CALIFA) database. In part…
Insights on the stellar mass-metallicity relation from the CALIFA survey
R. M. González Delgado, R. Cid Fernandes, R. García-Benito +27
We use spatially and temporally resolved maps of stellar population properties of 300 galaxies from the CALIFA integral field survey to investigate how the stellar metallicity (Z*)…
Fossil Groups Origins III. The relation between optical and X-ray luminosities
M. Girardi, J. A. L. Aguerri, S. De Grandi +11
This study is part of the FOssil Groups Origin (FOGO) project which aims at carrying out a systematic and multiwavelength study of a large sample of fossil systems. Here we focus o…
A new scaling relation for HII regions in spiral galaxies: unveiling the true nature of the mass-metallicity relation
F. F. Rosales-Ortega, S. F. Sánchez, J. Iglesias-Páramo +5
We demonstrate the existence of a -local- relation between galaxy surface mass density, gas metallicity, and star-formation rate density using spatially-resolved optical spectrosco…