3 papers
astro-ph.SR2026
A quasi-star is born: formation and evolution of accreting quasi-stars as a pathway to Little Red Dots at non-zero metallicity
J. Roman-Garza, D. Schaerer, C. Charbonnel +5
The recently discovered Little Red Dots identified by the James Webb Space Telescope are compact high-redshift sources whose properties have motivated models involving black holes…
astro-ph.GA2025
Discovery of new N-emitters over a wide redshift range
I. Morel, D. Schaerer, R. Marques-Chaves +5
JWST observations have revealed rare galaxies with UV spectra exhibiting intense lines of nitrogen, indicative of super-solar N/O abundances at low metallicity. To better understan…
astro-ph.GA2024
Unveiling dust, molecular gas, and high star formation efficiency in extremely UV bright star-forming galaxies at
M. Dessauges-Zavadsky, R. Marques-Chaves, D. Schaerer +4
We analysed ALMA FIR (1.3 mm) dust continuum and CO emission of 12 starburst galaxies at , selected for their extreme brightness in the rest-UV with $M_{\rm UV} = -2…