48 citations · 200 across the 12 of their papers we have counts for
13 papers
On the origin of the short-period Blue Straggler Stars in Collinder 261: a binary evolution approach
M. Echeveste, M. J. Rain, G. Carraro +3
Building on the recent publication of a fresh catalog of blue straggler stars in Galactic open clusters using Gaia DR3, we conduct a study focusing on the blue straggler stars with…
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…
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…
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…
Binary origin of blue straggler stars in Galactic star clusters
M. J. Rain, M. S. Pera, G. Perren +5
Building on the recent release of a new \emph{Gaia}-based blue straggler star catalog in Galactic open star clusters (OCs), we explored the properties of these stars in a cluster s…
Apsidal motion in massive close binary systems. I. HD 165052 an extreme case?
G. Ferrero, R. Gamen, O. G. Benvenuto +1
We present a new set of radial-velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling of high-resolution optical spectra. The longitude of the perias…
The evolution of low mass, close binary systems with a neutron star component: a detailed grid
M. A. De Vito, O. G. Benvenuto
In close binary systems composed of a normal, donor star and an accreting neutron star, the amount of material received by the accreting component is, so far, a real intrigue. In t…
Evolution of low mass close binary systems with a neutron star: its dependence with the initial neutron star mass
M. A. De Vito, O. G. Benvenuto
We construct a set of binary evolutionary sequences for systems composed by a normal, solar composition, donor star together with a neutron star. We consider a variety of masses fo…
Simultaneous formation of Solar System giant planets
O. M. Guilera, A. Fortier, A. Brunini +1
In the last few years, the so-called "Nice model" has got a significant importance in the study of the formation and evolution of the solar system. According to this model, the ini…
Consequences of the simultaneous formation of giant planets by the core accretion mechanism
O. M. Guilera, A. Brunini, O. G. Benvenuto
The core accretion mechanism is presently the most widely accepted cause of the formation of giant planets. For simplicity, most models presently assume that the growth of planetar…
Oligarchic planetesimal accretion and giant planet formation II
A. Fortier, O. G. Benvenuto, A. Brunini
The equation of state calculated by Saumon and collaborators has been adopted in most core-accretion simulations of giant-planet formation performed to date. Since some minor error…
New DA white dwarf evolutionary models and their pulsational properties
A. H. Corsico, L. G. Althaus, O. G. Benvenuto +1
In this letter we investigate the pulsational properties of ZZ Ceti stars on the basis of new white dwarf evolutionary models calculated in a self-consistent way with the predictio…
Formation and evolution of a 0.242 Msun helium white dwarf in presence of element diffusion
Leandro Althaus, Aldo Serenelli, Omar Benvenuto
A 0.242 Msun object that finally becomes a helium white dwarf is evolved from Roche lobe detachment down to very low luminosities. In doing so, we employ our stellar code to which…