3 papers
astro-ph.SR2026
The IACOB project XVIII. Prevalence of short-period binaries among Galactic helium rich O-type stars
C. Martínez-Sebastián, R. Gamen, O. G. Benvenuto +6
For decades, the origin of helium enrichment in O-type stars has remained an open question. In this study, we investigate the correlation between surface helium abundance and orbit…
astro-ph.SR2026
Impact of stellar rotation on type II supernova progenitor masses from pre-explosion imaging
L. Martinez, O. G. Benvenuto, M. A. De Vito
The initial masses of red supergiant (RSG) type II supernova (SN II) progenitors are commonly inferred from pre-explosion imaging by converting the progenitor luminosity into an in…
astro-ph.HE2025
Understanding the evolution of black hole spin in X-ray binary systems: Case study of XTE~J1550-564
L. Bartolomeo Koninckx, M. A. De Vito, O. G. Benvenuto
We present a comprehensive study of the X-ray binary system XTE~J1550-564, with the primary objective of analyzing the evolution of the black hole's spin parameter. To achieve this…