Search Results - "Bressan, Alessandro"

The mass spectrum of compact remnants from the parsec stellar evolution tracks by Spera, Mario, Mapelli, Michela, Bressan, Alessandro

“…The mass spectrum of stellar mass black holes (BHs) is highly uncertain. Dynamical mass measurements are available only for few (∼10) BHs in X-ray binaries,…”
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parsec evolutionary tracks of massive stars up to 350 M⊙ at metallicities 0.0001 ≤ Z ≤ 0.04 by Chen, Yang, Bressan, Alessandro, Girardi, Léo, Marigo, Paola, Kong, Xu, Lanza, Antonio

“…We complement the parsec data base of stellar evolutionary tracks with new models of massive stars, from the pre-main-sequence phase to the central carbon…”
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Formation of black holes in the pair-instability mass gap: Evolution of a post-collision star by Costa, Guglielmo, Ballone, Alessandro, Mapelli, Michela, Bressan, Alessandro

“…ABSTRACT The detection of GW190521 by the LIGO–Virgo collaboration has revealed the existence of black holes (BHs) in the pair-instability (PI) mass gap. Here,…”
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Formation of GW190521 from stellar evolution: the impact of the hydrogen-rich envelope, dredge-up, and 12C(α, γ)16O rate on the pair-instability black hole mass gap by Costa, Guglielmo, Bressan, Alessandro, Mapelli, Michela, Marigo, Paola, Iorio, Giuliano, Spera, Mario

“…ABSTRACT Pair-instability (PI) is expected to open a gap in the mass spectrum of black holes (BHs) between ≈40–65 and ≈120 M⊙. The existence of the mass gap is…”
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Binary black holes in the pair instability mass gap by Di Carlo, Ugo N, Mapelli, Michela, Bouffanais, Yann, Giacobbo, Nicola, Santoliquido, Filippo, Bressan, Alessandro, Spera, Mario, Haardt, Francesco

“…ABSTRACT Pair instability (PI) and pulsational PI prevent the formation of black holes (BHs) with mass ≳60 M⊙ from single star evolution. Here, we investigate…”
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Lithium evolution in metal-poor stars: from pre-main sequence to the Spite plateau by Fu, Xiaoting, Bressan, Alessandro, Molaro, Paolo, Marigo, Paola

“…Lithium abundance derived in metal-poor main-sequence (MS) stars is about three times lower than the value of primordial Li predicted by the standard big bang…”
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Impact of the Rotation and Compactness of Progenitors on the Mass of Black Holes by Mapelli, Michela, Spera, Mario, Montanari, Enrico, Limongi, Marco, Chieffi, Alessandro, Giacobbo, Nicola, Bressan, Alessandro, Bouffanais, Yann

“…We investigate the impact of stellar rotation on the formation of black holes (BHs) by means of our population synthesis code sevn. Rotation affects the mass…”
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Evolution of thermally pulsing asymptotic giant branch stars - I. The colibri code by Marigo, Paola, Bressan, Alessandro, Nanni, Ambra, Girardi, Léo, Pumo, Maria Letizia

“…We present the colibri code for computing the evolution of stars along the thermally pulsing asymptotic giant branch (TP-AGB) phase. Compared to purely…”
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New PARSEC evolutionary tracks of massive stars at low metallicity: testing canonical stellar evolution in nearby star-forming dwarf galaxies by Tang, Jing, Bressan, Alessandro, Rosenfield, Philip, Slemer, Alessandra, Marigo, Paola, Girardi, Léo, Bianchi, Luciana

“…We extend the PARSEC library of stellar evolutionary tracks by computing new models of massive stars, from 14 to 350 M⊙. The input physics is the same used in…”
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Evolution of thermally pulsing asymptotic giant branch stars - II. Dust production at varying metallicity by Nanni, Ambra, Bressan, Alessandro, Marigo, Paola, Girardi, Léo

“…We present the dust ejecta of the new stellar models for the thermally pulsing asymptotic giant branch (TP-AGB) phase computed with the colibri code. We use a…”
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The host galaxies of double compact objects merging in the local Universe by Mapelli, Michela, Giacobbo, Nicola, Toffano, Mattia, Ripamonti, Emanuele, Bressan, Alessandro, Spera, Mario, Branchesi, Marica

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A NEW GENERATION OF PARSEC-COLIBRI STELLAR ISOCHRONES INCLUDING THE TP-AGB PHASE by Marigo, Paola, Girardi, Léo, Bressan, Alessandro, Rosenfield, Philip, Aringer, Bernhard, Chen, Yang, Dussin, Marco, Nanni, Ambra, Pastorelli, Giada, Rodrigues, Thaíse S., Trabucchi, Michele, Bladh, Sara, Dalcanton, Julianne, Groenewegen, Martin A. T., Montalbán, Josefina, Wood, Peter R.

“…We introduce a new generation of PARSEC-COLIBRI stellar isochrones that includes a detailed treatment of the thermally pulsing asymptotic giant branch (TP-AGB)…”
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A Study of Primordial Very Massive Star Evolution by Volpato, Guglielmo, Marigo, Paola, Costa, Guglielmo, Bressan, Alessandro, Trabucchi, Michele, Girardi, Léo

“…Abstract We present new evolutionary models of primordial very massive stars with initial masses ranging from 100 to 1000 M ⊙ that extend from the main…”
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Evolution of thermally pulsing asymptotic giant branch stars - III. Dust production at supersolar metallicities by Nanni, Ambra, Bressan, Alessandro, Marigo, Paola, Girardi, Léo

“…We extend the formalism presented in our recent calculations of dust ejecta from the Thermally Pulsing Asymptotic Giant Branch (TP-AGB) phase to the case of…”
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EVOLUTION OF THERMALLY PULSING ASYMPTOTIC GIANT BRANCH STARS. V. CONSTRAINING THE MASS LOSS AND LIFETIMES OF INTERMEDIATE-MASS, LOW-METALLICITY AGB STARS by Rosenfield, Philip, Marigo, Paola, Girardi, Leo, Dalcanton, Julianne J, Bressan, Alessandro, Williams, Benjamin F, Dolphin, Andrew

“…ABSTRACT Thermally pulsing asymptotic giant branch (TP-AGB) stars are relatively short lived (less than a few Myr), yet their cool effective temperatures, high…”
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ÆSOPUS 2.0: Low-temperature Opacities with Solid Grains by Marigo, Paola, Woitke, Peter, Tognelli, Emanuele, Girardi, Léo, Aringer, Bernhard, Bressan, Alessandro

“…Abstract In this study we compute the equation of state and Rosseland mean opacity from temperatures of T ≃ 30,000 K down to T ≃ 400 K, pushing the…”
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The Role of the Third Dredge-up and Mass Loss in Shaping the Initial–Final Mass Relation of White Dwarfs by Addari, Francesco, Marigo, Paola, Bressan, Alessandro, Costa, Guglielmo, Shepherd, Kendall, Volpato, Guglielmo

“…Abstract 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…”
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Uncertainties on near-core mixing in red-clump stars: effects on the period spacing and on the luminosity of the AGB bump by Bossini, Diego, Miglio, Andrea, Salaris, Maurizio, Pietrinferni, Adriano, Montalbán, Josefina, Bressan, Alessandro, Noels, Arlette, Cassisi, Santi, Girardi, Léo, Marigo, Paola

“…Low-mass stars in the He-core-burning (HeCB) phase play a major role in stellar, galactic, and extragalactic astrophysics. The ability to predict accurately…”
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ÆSOPUS 2.1: Low-temperature Opacities Extended to High Pressure by Marigo, Paola, Addari, Francesco, Bossini, Diego, Bressan, Alessandro, Costa, Guglielmo, Girardi, Léo, Pastorelli, Giada, Trabucchi, Michele, Volpato, Guglielmo

“…Abstract We address the critical need for accurate Rosseland mean gas opacities in high-pressure environments, spanning temperatures from 100 K to 32,000 K…”
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A Study of Primordial Very Massive Star Evolution. II. Stellar Rotation and Gamma-Ray Burst Progenitors by Volpato, Guglielmo, Marigo, Paola, Costa, Guglielmo, Bressan, Alessandro, Trabucchi, Michele, Girardi, Léo, Addari, Francesco

“…Abstract 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…”
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