31 citations · 83 across the 8 of their papers we have counts for
8 papers
Prescriptions for the stochasticity effect on the integrated X-ray luminosity of star-forming galaxies:Implications for selecting star-forming galaxies and AGN in X-ray surveys
Elias Kyritsis, Andreas Zezas, Konstantinos Kovlakas
(abridged) The integrated X-ray luminosity (Lx) of star-forming galaxies is dominated by high-mass X-ray binary (HMXB) populations. The discrete nature of these populations introdu…
HECATEv2: An all-sky galaxy catalogue for multimessenger astrophysics
E. Kyritsis, A. Zezas, K. Kovlakas +4
We present HECATEv2, the second release of the Heraklion Extragalactic Catalogue (HECATE), an all-sky, value-added galaxy catalogue comprising 204733 galaxies from the HyperLEDA da…
The hunt for new pulsating ultraluminous X-ray sources: a clustering approach
Nicolò Oreste Pinciroli Vago, Roberta Amato, Matteo Imbrogno +5
The discovery of fast and variable coherent signals in a handful of ultraluminous X-ray sources (ULXs) testifies to the presence of super-Eddington accreting neutron stars, and dra…
A machine-learning photometric classifier for massive stars in nearby galaxies II. The catalog
G. Maravelias, A. Z. Bonanos, K. Antoniadis +8
Mass loss is a key aspect of stellar evolution, particularly in evolved massive stars, yet episodic mass loss remains poorly understood. To investigate this, we need evolved massiv…
A new automated tool for the spectral classification of OB stars
E. Kyritsis, G. Maravelias, A. Zezas +3
(abridged) We develop a tool for the automated spectral classification of OB stars according to their sub-types. We use the regular Random Forest (RF) algorithm, the Probabilistic…
The eROSITA Final Equatorial-Depth Survey (eFEDS): Presenting The Demographics of X-ray Emission From Normal Galaxies
N. Vulic, A. E. Hornschemeier, F. Haberl +17
The Final Equatorial Depth Survey (eFEDS), completed during the calibration and performance verification phase of the instrument on $\it{Spectrum\, Ro…
Sub-galactic scaling relations between X-ray luminosity, star-formation rate, and stellar mass
Konstantinos Kouroumpatzakis, Andreas Zezas, Paul Sell +6
X-ray luminosity () originating from high-mass X-ray binaries (HMXBs) is tightly correlated with the host galaxy's star-formation rate (SFR). We explore this connection at sub…
Do sub-galactic regions follow the galaxy-wide X-ray scaling relations? The example of NGC 3310 and NGC 2276
K. Anastasopoulou, A. Zezas, V. Gkiokas +1
We present results from Chandra observations of the X-ray starburst galaxies NGC 3310 and NGC 2276. We detect 27 discrete sources in NGC 3310, and 19 discrete sources in NGC 2276 w…