TY - JOUR

T1 - POSYDON

T2 - A General-purpose Population Synthesis Code with Detailed Binary-evolution Simulations

AU - Fragos, Tassos

AU - Andrews, Jeff J.

AU - Bavera, Simone S.

AU - Berry, Christopher P. L.

AU - Coughlin, Scott

AU - Dotter, Aaron

AU - Giri, Prabin

AU - Kalogera, Vicky

AU - Katsaggelos, Aggelos

AU - Kovlakas, Konstantinos

AU - Lalvani, Shamal

AU - Misra, Devina

AU - Srivastava, Philipp M.

AU - Qin, Ying

AU - Rocha, Kyle A.

AU - Roman-Garza, Jaime

AU - Serra, Juan Gabriel

AU - Stahle, Petter

AU - Sun, Meng

AU - Teng, Xu

AU - Trajcevski, Goce

AU - Tran, Nam Hai

AU - Xing, Zepei

AU - Zapartas, Emmanouil

AU - Zevin, Michael

PY - 2023/2/1

Y1 - 2023/2/1

N2 - Most massive stars are members of a binary or a higher-order stellar system, where the presence of a binary companion can decisively alter their evolution via binary interactions. Interacting binaries are also important astrophysical laboratories for the study of compact objects. Binary population synthesis studies have been used extensively over the last two decades to interpret observations of compact-object binaries and to decipher the physical processes that lead to their formation. Here, we present POSYDON, a novel, publicly available, binary population synthesis code that incorporates full stellar structure and binary-evolution modeling, using the MESA code, throughout the whole evolution of the binaries. The use of POSYDON enables the self-consistent treatment of physical processes in stellar and binary evolution, including: realistic mass-transfer calculations and assessment of stability, internal angular-momentum transport and tides, stellar core sizes, mass-transfer rates, and orbital periods. This paper describes the detailed methodology and implementation of POSYDON, including the assumed physics of stellar and binary evolution, the extensive grids of detailed single- and binary-star models, the postprocessing, classification, and interpolation methods we developed for use with the grids, and the treatment of evolutionary phases that are not based on precalculated grids. The first version of POSYDON targets binaries with massive primary stars (potential progenitors of neutron stars or black holes) at solar metallicity.

AB - Most massive stars are members of a binary or a higher-order stellar system, where the presence of a binary companion can decisively alter their evolution via binary interactions. Interacting binaries are also important astrophysical laboratories for the study of compact objects. Binary population synthesis studies have been used extensively over the last two decades to interpret observations of compact-object binaries and to decipher the physical processes that lead to their formation. Here, we present POSYDON, a novel, publicly available, binary population synthesis code that incorporates full stellar structure and binary-evolution modeling, using the MESA code, throughout the whole evolution of the binaries. The use of POSYDON enables the self-consistent treatment of physical processes in stellar and binary evolution, including: realistic mass-transfer calculations and assessment of stability, internal angular-momentum transport and tides, stellar core sizes, mass-transfer rates, and orbital periods. This paper describes the detailed methodology and implementation of POSYDON, including the assumed physics of stellar and binary evolution, the extensive grids of detailed single- and binary-star models, the postprocessing, classification, and interpolation methods we developed for use with the grids, and the treatment of evolutionary phases that are not based on precalculated grids. The first version of POSYDON targets binaries with massive primary stars (potential progenitors of neutron stars or black holes) at solar metallicity.

KW - ROTATING MASSIVE STARS

KW - EQUATION-OF-STATE

KW - X-RAY BINARIES

KW - PULSATIONAL PAIR INSTABILITY

KW - ELECTRON-CAPTURE SUPERNOVAE

KW - GRAVITATIONAL-WAVE SOURCES

KW - SECULAR ORBITAL EVOLUTION

KW - COMMON-ENVELOPE EVOLUTION

KW - BLACK-HOLE BINARIES

KW - DOUBLE WHITE-DWARFS

U2 - 10.3847/1538-4365/ac90c1

DO - 10.3847/1538-4365/ac90c1

M3 - Journal article

VL - 264

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 45

ER -