583 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Instituto de Astrofísica de AndalucíaES41 papers
- Instituto de Astrofísica de CanariasES17 papers
- Instituto de Física de CantabriaES17 papers
- Universidad de La LagunaES16 papers
- Centro de AstrobiologíaES14 papers
- Universidad Complutense de MadridES14 papers
- Universidad de CantabriaES14 papers
- Instituto de Radioastronomía MilimétricaES12 papers
- Universidad Nacional Autónoma de MéxicoMX12 papers
- European Space Astronomy CentreES11 papers
- Mbarara University of Science and TechnologyUG11 papers
- North-West UniversityZA11 papers
22 papers · 1 filter
GLACE survey: galaxy activity in ZwCl0024+1652 cluster from strong optical emission lines
Zeleke Beyoro-Amado, Miguel Sánchez-Portal, Angel Bongiovanni +9
Although ZwCl0024+1652 galaxy cluster at has been thoroughly analysed, it lacks a comprehensive study of star formation and nuclear activity of its members. With GaLAxy…
On multifluid perturbations in scalar-tensor cosmology
Joseph Ntahompagaze, Shambel Sahlu, Amare Abebe +1
In this paper the scalar-tensor theory is applied to the study of perturbations in a multi-fluid universe, using the 1+3 covariant approach. Both scalar and harmonic decompositions…
AGN and Star-Formation Properties of Inside-out Assembled Galaxy Candidates at z<0.1
Dejene Zewdie, Mirjana Pović, Manuel Aravena +2
We study a sample of 48127 galaxies selected from the SDSS MPA-JHU catalogue, with and . Local galaxies in this stellar mass range…
Galaxy classification: deep learning on the OTELO and COSMOS databases
José A. de Diego, Jakub Nadolny, Ángel Bongiovanni +19
Context. The accurate classification of hundreds of thousands of galaxies observed in modern deep surveys is imperative if we want to understand the universe and its evolution. Aim…
Development in astronomy in Ethiopia and East-Africa through nuclear activity in galaxies
Mirjana Pović
In this paper we summarise the research that is currently going on in Ethiopia and East-Africa in extragalactic astronomy and physics of active galaxies and active galactic nuclei…
The impact of CMEs on the critical frequency of F2-layer ionosphere (foF2)
Alene Seyoum, Nat Gopalswamy, Melessew Nigussie +1
The ionospheric critical frequency (foF2) from ionosonde measurements at geographic high, middle, and low latitudes is analyzed with the occurrence of coronal mass ejections (CMEs)…
Study of AGN contribution on morphological parameters of their host galaxies
Tilahun Getachew-Woreta, Mirjana Pović, Josefa Masegosa +3
We tested how the AGN contribution (5% - 75% of the total flux) may affect different morphological parameters commonly used in galaxy classification. We carried out all analysis at…
Galaxy evolution studies in clusters: the case of Cl0024+1652 cluster galaxies at z0.4
Zeleke Beyoro-Amado, {E-mail, : +6
Studying the transformation of cluster galaxies contributes a lot to have a clear picture of evolution of the universe. Towards that we are studying different properties (morpholog…
Properties of green valley galaxies in relation to their selection criteria
Beatrice Nyiransengiyumva, Mirjana Povic, Pheneas Nkundabakura +1
The distribution of galaxies has been studied to show the difference between the blue cloud and red sequence and to define the green valley region. However, there are still many op…
The properties of inside-out assembled galaxies at
Dejene Zewdie, Mirjana Pović, Manuel Aravena +2
In this work, we study the properties of galaxies that are showing the inside-out assembly (which we call inside-out assembled galaxies; IOAGs), with the main aim to understand bet…
Accretion rate in AGN and X-ray-to-optical flux ratio at z 0.2
Asrate Gaulle, Mirjana Pović, Dejene Zewdie
We explored a sample of 545 local galaxies using data from the 3XMM-DR7 and SDSS-DR8 surveys. We carried out all analyses up to z\,\,0.2, and we studied the relation between…
Dichotomy of radio loud and radio quiet quasars in four dimensional eigenvector one (4DE1) parameter space
Shimeles Terefe, Ascensión Del Olmo Orozco, Paola Marziani +1
Recent work has shown that it is possible to systematize quasars (QSOs) spectral diversity in 4DE1 parameter space. The spectra contained in most of the surveys have low signal to…
Multiwavelength morphological study of active galaxies
Betelehem Bilata-Woldeyes, Mirjana Pović, Zeleke Beyoro-Amado +2
Studying the morphology of a large sample of active galaxies at different wavelengths and comparing it with active galactic nuclei (AGN) properties, such as black hole mass ($M_{BH…
Properties of X-ray detected far-IR AGN in the green valley
Antoine Mahoro, Mirjana Pović, Petri Väisänen +3
In this study, we analysed active galactic nuclei in the "green valley" by comparing active and non-active galaxies using data from the COSMOS field. We found that most of our X-ra…
Accelerating universe in modified teleparallel gravity theory
Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe +1
This paper studies the cosmology of accelerating expansion of the universe in modified teleparallel gravity theory. We discuss the cosmology of gravity theory and its impl…
The OTELO survey: Nature and mass-metallicity relation for H emitters at
Jakub Nadolny, Maritza A. Lara-López, Miguel Cerviño +14
A sample of low-mass H emission line sources (ELS) at was studied in the context of the mass-metallicty relation (MZR) and its possible evolution. We drew our sam…
The OTELO survey. A case study of [O III]4959,5007 emitters at <z> = 0.83
Ángel Bongiovanni, Marina Ramón-Pérez, Ana María Pérez García +22
The OTELO survey is a very deep, blind exploration of a selected region of the Extended Groth Strip and is designed for finding emission-line sources (ELSs). The survey design, obs…
Optical Spectroscopy of nearby type1-LINERs
S. Cazzoli, I. Márquez, J. Masegosa +6
We present the highlights from our recent study of 22 local (z0.025) type-1 LINERs from the Palomar Survey, on the basis of optical long-slit spectroscopic observations taken wi…
The OTELO survey. III. Demography, morphology, IR luminosity and environment of AGN hosts
Marina Ramón-Pérez, Ángel Bongiovanni, Ana Mará Pérez García +16
We take advantage of the capabilities of the OTELO survey to select and study the AGN population in the field. We performed an analysis of the properties of these objects, includin…
The shock driving capability of a CME inferred from multiwavelength observations
Fithanegest Kassa Dagnew, Nat Gopalswamy, Solomon Belay Tessema +4
The radial speed of a coronal mass ejection (CME) determines the shock-driving capability of a CME as indicated by the presence of a type II radio burst. Here we report on the Apri…
The OTELO survey. I. Description, data reduction, and multi-wavelength catalogue
Ángel Bongiovanni, Marina Ramón-Pérez, Ana Mará Pérez García +21
The evolution of galaxies through cosmic time is studied observationally by means of extragalactic surveys. The OTELO survey aims to provide the deepest narrow-band survey to date…
The OTELO survey. II. The faint-end of the H luminosity function at z 0.40
Marina Ramón-Pérez, Ángel Bongiovanni, Ana María Pérez García +16
We take advantage of the capability of the OTELO survey to obtain the H luminosity function (LF) at . Because of the deepest coverage of OTELO, we are able to d…