activity
20232026
most citedA versatile classification tool for galactic activity using optical and infrared colors

12 citations · 21 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.GA2026

Investigating the ionization mechanisms powering the extreme emission lines in metal-poor galaxies

C. Daoutis, V. Lebouteiller, D. Schaerer +11

Extreme emission metal-poor galaxies (EEMPGs) are excellent local laboratories for understanding the extreme physical conditions and ionizing radiation fields in the early Universe…

astro-ph.GA2026

Search for High-Ionization Nebular Emission (SHINE). I. A Systematically Selected [Ne V] Sample at z > 3 with JWST/NIRSpec PRISM

Shobita Satyapal, Sara Doan, Daniel Schaerer +8

We conduct the first systematic Search for High-Ionization Nebular Emission (SHINE) using [Ne V] in JWST/NIRSpec PRISM spectroscopy at . From more than 9,000 gala…

astro-ph.GA2026

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…

astro-ph.GA2025

Mid-Infrared diagnostics for identifying main sequence galaxies in the local Universe

C. Daoutis, A. Zezas, M. L. N. Ashby

A galaxy's mid-IR spectrum encodes key information on its radiation field, star formation, and dust properties. Characterizing this spectrum therefore offers strong constraints on…

astro-ph.GA2024

From seagull to hummingbird: New diagnostic methods for resolving galaxy activity

C. Daoutis, A. Zezas, E. Kyritsis +2

Context. A major challenge in astrophysics is classifying galaxies by their activity. Current methods often require multiple diagnostics to capture the full range of galactic activ…

astro-ph.GA2024★ 9 cited

Blueberry galaxies up to 200 Mpc and their optical and infrared properties

K. Kouroumpatzakis, J. Svoboda, A. Zezas +6

Dwarf highly star-forming galaxies (SFGs) dominated the early Universe and are considered the main driver of its reionization. However, direct observations of these distant galaxie…

astro-ph.GA2023★ 12 cited

A versatile classification tool for galactic activity using optical and infrared colors

Charalampos Daoutis, Elias Kyritsis, Konstantinos Kouroumpatzakis +1

(abridged) The overwhelming majority of diagnostic tools for galactic activity are focused on active galaxies. Passive or dormant galaxies are often excluded from these diagnostics…

astro-ph.GA2023

A versatile classification tool for galactic activity using optical and infrared colors

Elias Kyritsis, Charalampos Daoutis, Andreas Zezas +1

We use the Random Forest (RF) algorithm to develop a tool for automated activity classification of galaxies into 5 different classes: Star-forming (SF), AGN, LINER, Composite, and…