3 papers
astro-ph.GA2026
A comparative study of O, Ne, Cl, and Ar in Hii regions and PNe of the Galactic disk: Temporal evolution of radial gradients?
Alexia Amayo, Leticia Carigi, José Eduardo Méndez-Delgado +2
(Abridged) We compare the radial abundance gradients of O, Ne, Cl, and Ar using a sample of 42 HII regions and 176 planetary nebulae (PNe) from the DESIRED catalogue in the Galacti…
astro-ph.IM2025
Very Massive Stars with the Habitable Worlds Observatory
Fabrice Martins, Aida Wofford, Miriam Garcia +3
Very massive stars (VMS) are defined as stars with an initial mass in excess of 100 Msun. Because of their short lifetime and the shape of the stellar mass function, they are rare…
astro-ph.GA2025
Chlorine abundances in star-forming regions of the local Universe
M. Orte-GarcÃa, C. Esteban, J. E. Méndez-Delgado +4
Aims. We study the behaviour of Cl abundance and its ratios with respect to O, S and Ar abundances in a sample of more than 200 spectra of Galactic and extragalactic H ii regions a…