36 citations · 70 across the 9 of their papers we have counts for
9 papers
A comparative study of galaxy evolution with four different active galactic nucleus torus models and two different host geometries
Michail Papadopoulos, Vicky Papadopoulou Lesta, Ioannis Michos +2
Estimating physical quantities such as the star formation rate, stellar mass and active galactic nucleus (AGN) fraction of galaxies is a key step in understanding galaxy formation…
Reconstructing the mid-infrared spectra of galaxies using ultraviolet to submillimeter photometry and Deep Generative Networks
Agapi Rissaki, Orestis Pavlou, Dimitris Fotakis +2
The mid-infrared spectra of galaxies are rich in features such as the Polycyclic Aromatic Hydrocarbon (PAH) and silicate dust features which give valuable information about the phy…
Graph Theoretical Analysis of local ultraluminous infrared galaxies and quasars
Orestis Pavlou, Ioannis Michos, Vicky Papadopoulou Lesta +3
We present a methodological framework for studying galaxy evolution by utilizing Graph Theory and network analysis tools. We study the evolutionary processes of local ultraluminous…
Classification of local ultraluminous infrared galaxies and quasars with kernel principal component analysis
Evangelos S. Papaefthymiou, Ioannis Michos, Orestis Pavlou +2
We present a new diagnostic diagram for local ultraluminous infrared galaxies (ULIRGs) and quasars, analysing particularly the Spitzer Space Telescope's Infrared Spectrograph (IRS)…
Detecting and analysing the topology of the cosmic web with spatial clustering algorithms I: Methods
Dimitrios Kelesis, Spyros Basilakos, Vicky Papadopoulou Lesta +2
In this paper we explore the use of spatial clustering algorithms as a new computational approach for modeling the cosmic web. We demonstrate that such algorithms are efficient in…
A new look at local ultraluminous infrared galaxies: the atlas and radiative transfer models of their complex physics
A. Efstathiou, D. Farrah, J. Afonso +11
We present the ultraviolet to submillimetre spectral energy distributions (SEDs) of the HERschel Ultra Luminous Infrared Galaxy Survey (HERUS) sample of 42 local ultraluminous infr…
A hyperluminous obscured quasar at a redshift of z ~ 4.3
Andreas Efstathiou, Katarzyna Malek, Denis Burgarella +9
In this work we report the discovery of the hyperluminous galaxy HELP_J100156.75+022344.7 at the photometric redshift of z ~ 4.3. The galaxy was discovered in the Cosmological Evol…
Solving Inverse Problems for Spectral Energy Distributions with Deep Generative Networks
Agapi Rissaki, Orestis Pavlou, Dimitris Fotakis +2
We propose an end-to-end approach for solving inverse problems for a class of complex astronomical signals, namely Spectral Energy Distributions (SEDs). Our goal is to reconstruct…
How Many Attackers Can Selfish Defenders Catch?
Marios Mavronicolas, Burkhard Monien, Vicky Papadopoulou
In a distributed system with {\it attacks} and {\it defenses,} both {\it attackers} and {\it defenders} are self-interested entities. We assume a {\it reward-sharing} scheme among…