3 papers
astro-ph.GA2025
New clues on the extended HeII ionization in IZw18 from GTC/MEGARA and JWST/MIRI
A. Arroyo-Polonio, C. Kehrig, J. M. Vílchez +5
IZw18 is one of the lowest-metallicity star-forming galaxies known at z0, considered a unique local analogue of the first galaxies. The origin of its hard ionizing continuum,…
astro-ph.GA2024
Unraveling the Kinematics of IZw18: A Detailed Study of Ionized Gas with MEGARA/GTC
Antonio Arroyo-Polonio, Carolina Kehrig, Jorge Iglesias Paramo +6
This study delves into the intricate kinematic behavior of ionized gas within IZw18, a galaxy known for its remarkably low metallicity and proximity. Leveraging data from MEGARA/GT…
astro-ph.SR2023
TESS photometry of the nova eruption in V606 Vul: asymmetric photosphere and multiple ejections?
Kirill V. Sokolovsky, Elias Aydi, Konstantin Malanchev +70
Lightcurves of many classical novae deviate from the canonical "fast rise - smooth decline" pattern and display complex variability behavior. We present the first TESS-space-photom…