586 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Instituto de Astrofísica de AndalucíaES15 papers
- University of RwandaRW15 papers
- Ethiopian Space Science and Technology InstituteET11 papers
- Instituto de Astrofísica de CanariasES9 papers
- Universidad de La LagunaES8 papers
- Aryabhatta Research Institute of Observational SciencesIN7 papers
- North-West UniversityZA7 papers
- Thüringer Landessternwarte TautenburgDE7 papers
- Kyambogo UniversityUG6 papers
- Royal Observatory of BelgiumBE6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Centro de AstrobiologíaES5 papers
62 papers
The OTELO Survey: The main sequence of low-mass galaxies
Bernabé Cedrés, Jordi Cepa, Carmen P. Padilla--Torres +15
This paper describes the relationship between the star formation rate and the stellar mass, the so-called main sequence (MS), of low-mass galaxies at three different redshifts from…
High-precision K2/TESS Photometry and HERMES Spectroscopy of Four Bright Field Stars
Otto Trust, Santosh Joshi, Benard Nsamba +13
Space-based photometry from K2 and TESS, coupled with high-resolution spectroscopy, provides a unique opportunity to re-examine the variability and chemical nature of four bright s…
Revisiting the exoplanet radius valley with host stars from SWEET-Cat
Juma Kamulali, Vardan Adibekyan, Benard Nsamba +7
The radius valley,a deficit of planets near 2 , was observed among exoplanets of radius 5 with periods 100 days by NASA's…
The impact of selection criteria on the properties of green valley galaxies
Beatrice Nyiransengiyumva, Mirjana Povic, Pheneas Nkundabakura +2
Context: The bi-modality in the distribution of galaxies usually obtained from colour-colour or colour-stellar mass diagrams has been studied to show the difference between the gal…
Dynamically close galaxy pairs from the unWISE survey: Testing the merger-AGN-star formation connection
Josephine Chishala, Roberto De Propris, Mirjana Pović
Galaxy mergers are expected to have a profound influence on the star formation histories of galaxies. It is generally expected that mergers are the main drivers of galaxy mass grow…
GLACE survey: OSIRIS/GTC multi-object spectroscopy of the rich galaxy cluster ZwCl 0024.0+1652 at z~0.4. III. The mass-SFR relation and the quenching of cluster galaxies
Simon B. De Daniloff, Ángel Bongiovanni, Miguel Sánchez-Portal +21
Galaxy clusters are among the largest and densest structures in the Universe. Their high density generally increases the suppression of star formation, known as quenching, altering…
Chemical abundances and doppler imaging of the Ap Si/He-wk star HD 100357
Athul Dileep, Santosh Joshi, Sofya Alexeeva +11
We present the results of time-resolved photometry, abundance analysis and Doppler imaging of an Ap star, HD 100357. The {\it TESS} photometry revealed rotational modulation with a…
Unveiling the Variability and Chemical Composition of AL Col
Surath C. Ghosh, Santosh Joshi, Samrat Ghosh +9
Using \tess\ short-cadence (120\,s) SAP flux, we identified a rotational frequency of 0.09655\, (\,d). Wavelet analysis reveals that while…
Data Augmentation With Back translation for Low Resource languages: A case of English and Luganda
Richard Kimera, Dongnyeong Heo, Daniela N. Rim +1
In this paper,we explore the application of Back translation (BT) as a semi-supervised technique to enhance Neural Machine Translation(NMT) models for the English-Luganda language…
Perturbations with bulk viscosity in modified chaplygin gas cosmology
Albert Munyeshyaka, Praveen Kumar Dhankar, Joseph Ntahompagaze
In the present work, we investigate cosmological perturbations of viscous modified chaplygin gas model. Using 1 + 3 covariant formalism, we define covariant and gauge invariant gra…
A weighted Murnaghan-Nakayama rule for -partitions
Per Alexandersson, Olivia Nabawanda
The -partition generating function is a quasisymmetric function obtained from a labeled poset. Recently, Liu and Weselcouch gave a formula for the coefficien…
GLACE survey: OSIRIS/GTC tuneable imaging of the galaxy cluster ZwCl 0024.0+1652 II. The mass--metallicity relationship and the effect of the environment
Bernabé Cedrés, Simon B. De Daniloff, Ángel Bongiovanni +21
In this paper, we revisit the data for the galaxy cluster ZwCl 0024.0+1652 provided by the GLACE survey and study the mass--metallicity function and its relationship with the envir…
The Lockman-SpReSO project. Galactic flows in a sample of far-infrared galaxies
Mauro González-Otero, Carmen P. Padilla-Torres, J. Ignacio González-Serrano +20
Methods. We performed measurements of the \MgII, \MgI, \FeIIa, \FeIIb, and \FeIIc\ spectral lines present in the spectra of the selected sample to determine the EW and velocity of…
High-precision photometric and high-resolution spectroscopic characterisation of HD 180347
Otto Trust, Lyudmila Mashonkina, Edward Jurua +3
We report the analysis of high-precision space-based photometric and high-resolution spectroscopic observations of HD 180347. The high-quality light curves from the Transiting Exop…
A Mathematical Model for Co-infection Dynamics of Pneumocystis Pneumonia and HIV/AIDS with Treatment
Michael Byamukama, Damian Kajunguri, Martin Karuhanga
The control of opportunistic infections among HIV infected individuals should be one of the major public health concerns in reducing mortality rate of individuals living with HIV/A…
On 1 + 3 covariant perturbations of the quasi-Newtonian space-time in modified Gauss-Bonnet gravity
Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi +1
The consideration of a 1 + 3 covariant approach to cold dark matter universe with no shear cosmological dust model with irrotational flows is developed in the context of f (G) grav…
The [OIII] profiles of far-infrared active and non-active optically-selected green valley galaxies
Antoine Mahoro, Petri Väisänen, Mirjana Pović +8
We present a study of the line profile in a sub-sample of 8 active galactic nuclei (AGN) and 6 non-AGN in the optically-selected green valley at $\rm{z\,<\,0.5…
The miniJPAS survey: AGN & host galaxy co-evolution of X-ray selected sources
I. E. López, M. Brusa, S. Bonoli +35
Studies indicate strong evidence of a scaling relation in the local Universe between the supermassive black hole mass ($M_\rm{BH}$) and the stellar mass of their host galaxies ($M_…
Perturbations in the interacting vacuum
Albert Munyeshyaka, Joseph Ntahompagaze, Tom Mutabazi +4
In this study, we present the evolution of cosmological perturbations in a universe consisting of standard matter and interacting vacuum. We use the covariant formalism in…
Multifluid cosmology in f (G) gravity
Albert Munyeshyaka, Abraham Ayirwanda, Fidele Twagirayezu +1
The treatment of 1 + 3 covariant perturbation in a multifluid cosmology with the consideration of f (G) gravity, G being the Gauss-Bonnet term, is done in the present paper. We def…
The Lockman-SpReSO project. Description, target selection, observations and preliminary results
M. González-Otero, C. P. Padilla-Torres, J. Cepa +26
Context. Extragalactic surveys are a key tool for better understanding the evolution of galaxies. Both deep and wide-field surveys serve to provide a clearer emerging picture of th…
On inflationary parameters in scalar-tensor theories
Beatrice Murorunkwere, Fidele Twagirayezu, Albert Munyeshyaka +2
The equivalence between and scalar-tensor theories is revisited, we consequently explored different models. After consideration of specific definition of the scalar f…
Stellar populations of a sample of far-IR AGN and non-AGN green valley galaxies
Antoine Mahoro, Mirjana Pović, Petri Väisänen +2
We present a study on the stellar populations and stellar ages of sub-sample of far-infrared AGN and non-AGN green valley analysed in Mahoro et al. (2017,2019) at 0.6 < z < 1.0 usi…
The role of density perturbation on planet formation by pebble accretion
Geoffrey Andama, Nelson Ndugu, Simon . K. Anguma +1
Protoplanetary discs exhibit a diversity of gaps and rings of dust material, believed to be a manifestation of pressure maxima commonly associated with an ongoing planet formation…