Explanipedia

PARSEC V2.0: Rotating tracks and isochrones for seven additional metallicities in the range <i>Z</i> = 0.0001–0.03 Open

C.T. Nguyen, Guglielmo Costa, A. Bressan, L. Girardi, G. Cescutti , et al. · 2025

PARSEC v2.0 rotating stellar tracks were previously presented for six metallicity values from subsolar to solar values, with initial rotation rates ( ω i , defined as the ratio of the angular velocity and its critical value) spanning from …

Enhanced mass loss of very massive stars: Impact on the evolution, binary processes, and remnant mass spectrum Open

Kendall Shepherd, Guglielmo Costa, Cristiano Ugolini, Guglielmo Volpato, D. Bossini , et al. · 2025

Very massive stars (VMS) play a fundamental role in astrophysics. Their powerful stellar winds, which dictate their evolution, supernovae, and fate as black holes (BHs), are a key uncertainty, as evidence suggests their mass-loss rates may…

Strikingly high fraction of fast rotators in Magellanic Cloud star clusters Open

Greta Ettorre, Alessandro Mazzi, L. Girardi, Paola Marigo, Giada Pastorelli , et al. · 2025

There has been growing evidence that the rich star clusters in the Magellanic Clouds contain significant fractions of rapidly rotating stars. In this work, we aim to constrain these fractions by studying the colour–magnitude diagrams of fo…

Strikingly high fraction of fast rotators in Magellanic Cloud star clusters Open

Greta Ettorre, Alessandro Mazzi, L. Girardi, Paola Marigo, Giada Pastorelli , et al. · 2025

There has been growing evidence that the rich star clusters in the Magellanic Clouds contain significant fractions of rapidly rotating stars. In this work, we aim to constrain these fractions by studying the colour-magnitude diagrams of fo…

ÆSOPUS 2.1: Low-temperature Opacities Extended to High Pressure Open

Paola Marigo, Francesco Addari, D. Bossini, A. Bressan, Guglielmo Costa , et al. · 2024

We address the critical need for accurate Rosseland mean gas opacities in high-pressure environments, spanning temperatures from 100 K to 32,000 K. Current opacity tables from Wichita State University and Æ SOPUS 2.0 are limited to …

AESOPUS 2.1: Low-Temperature Opacities Extended to High Pressure Open

Paola Marigo, Francesco Addari, D. Bossini, A. Bressan, Guglielmo Costa , et al. · 2024

We address the critical need for accurate Rosseland mean gas opacities in high-pressure environments, spanning temperatures from 100 K to 32000 K. Current opacity tables from Wichita State University and AESOPUS 2.0 are limited to $\log(R)…

The detection and characterization of highly magnified stars with <i>JWST</i>: prospects of finding Population III Open

Erik Zackrisson, Adam Hultquist, Aron Kordt, J. M. Diego, Armin Nabizadeh , et al. · 2024

Gravitational lensing may render individual high-mass stars detectable out to cosmological distances, and several extremely magnified stars have in recent years been detected out to redshifts $z\approx 6$. Here, we present Muspelheim, a mo…

The Role of the Third Dredge-up and Mass Loss in Shaping the Initial–Final Mass Relation of White Dwarfs Open

Francesco Addari, Paola Marigo, A. Bressan, Guglielmo Costa, Kendall Shepherd , et al. · 2024

The initial–final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star’s initial mass to the mass of the resulting white dwarf. This study explores the IFMR in the initial mass range …

A Study of Primordial Very Massive Star Evolution II: Stellar Rotation and Gamma-Ray Burst Progenitors Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2024

Wind ejecta tables of rotating very massive stars from the paper: A Study of Primordial Very Massive Star Evolution II: Stellar Rotation and Gamma-Ray Burst Progenitors

A Study of Primordial Very Massive Star Evolution II: Stellar Rotation and Gamma-Ray Burst Progenitors Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2024

Wind ejecta tables of rotating very massive stars from the paper: A Study of Primordial Very Massive Star Evolution II: Stellar Rotation and Gamma-Ray Burst Progenitors

The Impact of the Third Dredge-up and Mass Loss in Shaping the Initial-Final Mass Relation of White Dwarfs Open

Francesco Addari, Paola Marigo, A. Bressan, Guglielmo Costa, Kendall Shepherd , et al. · 2024

The initial-final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star's initial mass to the mass of the resulting white dwarf. This study explores the IFMR in the initial mass range …

A Study of Primordial Very Massive Star Evolution. II. Stellar Rotation and Gamma-Ray Burst Progenitors Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2024

We calculate new evolutionary models of rotating primordial very massive stars, with initial mass from 100 M ⊙ to 200 M ⊙ , for two values of the initial metallicity Z = 0 and Z = 0.0002. For the first time in this mass range, we consider …

The detection and characterization of highly magnified stars with JWST: Prospects of finding Population III Open

Erik Zackrisson, Adam Hultquist, Aron Kordt, J. M. Diego, Armin Nabizadeh , et al. · 2023

Gravitational lensing may render individual high-mass stars detectable out to cosmological distances, and several extremely magnified stars have in recent years been detected out to redshifts $z\approx 6$. Here, we present Muspelheim, a mo…

A Study of Primordial Very Massive Star Evolution. II. Stellar Rotation and Gamma-Ray Burst Progenitors Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2023

We calculate new evolutionary models of rotating primordial very massive stars, with initial mass from $100\,M_{\odot}$ to $200\,M_{\odot}$, for two values of the initial metallicity ${Z=0}$ and ${Z=0.0002}$. For the first time in this mas…

A Study of Primordial Very Massive Star Evolution Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2023

Wind ejecta tables of very massive stars from the paper: A Study of Primordial Very Massive Star Evolution

A Study of Primordial Very Massive Star Evolution Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2023

We present new evolutionary models of primordial very massive stars with initial masses ranging from 100 to 1000 M ⊙ that extend from the main sequence to the onset of dynamical instability caused by the creation of electron–positron pairs…

A Study of Primordial Very Massive Star Evolution Open

Guglielmo Volpato, Paola Marigo, Guglielmo Costa, A. Bressan, Michele Trabucchi , et al. · 2022

We present new evolutionary models of primordial very massive stars, with initial masses ranging from $100\,\mathrm{{M}_{\odot}}$ to $1000\,\mathrm{{M}_{\odot}}$, that extend from the main sequence until the onset of dynamical instability …

PARSEC V2.0: Stellar tracks and isochrones of low- and intermediate-mass stars with rotation Open

C. T. Nguyen, Guglielmo Costa, L. Girardi, Guglielmo Volpato, A. Bressan , et al. · 2022

We present a new comprehensive collection of stellar evolutionary tracks and isochrones for rotating low- and intermediate-mass stars assembled with the updated version of PARSEC V 2.0. This version includes our recent calibration of the e…

EVOLUTION AND FINAL FATE OF MASSIVE STARS Open

Guglielmo Volpato · 2020

This Master thesis provides a theoretical exploration of the evolution of massive stars, with initial masses 10 <~ Mi/Msun <~ 100. To this aim, the stellar code MESA is used to compute a grid of 27 stellar evolutionary models with initial …

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