Efficiency of viscous angular momentum transport in dissipating
Be binaries

J 2025

Efficiency of viscous angular momentum transport in dissipating Be binaries

QUIGLEY, Peter; Carol E. JONES; Kenneth GAYLEY; Anahi GRANADA; Stan OWOCKI et al.

Základní údaje

Originální název

Efficiency of viscous angular momentum transport in dissipating Be binaries

Autoři

QUIGLEY, Peter; Carol E. JONES; Kenneth GAYLEY; Anahi GRANADA; Stan OWOCKI; Rina G. RAST; Mark W. SUFFAK; Atsuo T. OKAZAKI; Asif UD-DOULA; Jiří KRTIČKA; Alex C. CARCIOFI a Jeremy J. DRAKE

Vydání

ASTROPHYSICS AND SPACE SCIENCE, DORDRECHT, SPRINGER, 2025, 0004-640X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.500 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/25:00144616

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Be stars (142); Binary stars(154); Hydrodynamics (1963); Angular momentum transport

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 1. 2026 11:50, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Angular momentum transport is a fundamental process shaping the structure, evolution, and lifespans of stars and disks across a wide range of astrophysical systems. Be stars offer a valuable environment for studying viscous transport of angular momentum in massive stars, thanks to their rapid rotation, observable decretion disks, and likely absence of strong magnetic fields. This study analyzes angular momentum loss in 40 Be binary simulations spanning a range of orbital separations and companion masses, using a smoothed-particle hydrodynamics (SPH) code. A novel framework is introduced to define the outer disk edge based on the behaviour of the azimuthal velocity, streamlining the analysis of angular momentum transport within the system. Applying this framework reveals that systems with smaller truncation radii tend to reaccrete a larger fraction of their angular momentum during dissipation, thereby inhibiting the stars ability to regulate its surface rotation. Modification of this rate may alter the star’s mass-injection duty cycle or long-term evolutionary track. Finally, a subset of the simulations were post-processed using the Monte Carlo radiative transfer code HDUST, generating synthetic observables including H\alpha line profiles, V-band polarization, and UV polarization. Suggestions for observational verification of the dynamical results are demonstrated using the simulated data.

Návaznosti

GA25-15910S, projekt VaV

Název: Větry horkých hvězd: řešení nejistot ztráty hmoty v blízkosti Eddingtonovy limity

Investor: Grantová agentura ČR, Větry horkých hvězd: řešení nejistot ztráty hmoty v blízkosti Eddingtonovy limity

Citovat

QUIGLEY, Peter; Carol E. JONES; Kenneth GAYLEY; Anahi GRANADA; Stan OWOCKI; Rina G. RAST; Mark W. SUFFAK; Atsuo T. OKAZAKI; Asif UD-DOULA; Jiří KRTIČKA; Alex C. CARCIOFI a Jeremy J. DRAKE. Efficiency of viscous angular momentum transport in dissipating Be binaries. ASTROPHYSICS AND SPACE SCIENCE. DORDRECHT: SPRINGER, 2025, roč. 370, č. 10, s. 1-20. ISSN 0004-640X. Dostupné z: https://doi.org/10.1007/s10509-025-04494-9.

@article{2547332,
   author = {Quigley, Peter and Jones, Carol E. and Gayley, Kenneth and Granada, Anahi and Owocki, Stan and Rast, Rina G. and Suffak, Mark W. and Okazaki, Atsuo T. and udandDoula, Asif and Krtička, Jiří and Carciofi, Alex C. and Drake, Jeremy J.},
   article_location = {DORDRECHT},
   article_number = {10},
   doi = {https://doi.org/10.1007/s10509-025-04494-9},
   keywords = {Be stars (142); Binary stars(154); Hydrodynamics (1963); Angular momentum transport},
   language = {eng},
   issn = {0004-640X},
   journal = {ASTROPHYSICS AND SPACE SCIENCE},
   title = {Efficiency of viscous angular momentum transport in dissipating Be binaries},
   url = {https://link.springer.com/article/10.1007/s10509-025-04494-9},
   volume = {370},
   year = {2025}
}

TY  - JOUR
ID  - 2547332
AU  - Quigley, Peter - Jones, Carol E. - Gayley, Kenneth - Granada, Anahi - Owocki, Stan - Rast, Rina G. - Suffak, Mark W. - Okazaki, Atsuo T. - ud-Doula, Asif - Krtička, Jiří - Carciofi, Alex C. - Drake, Jeremy J.
PY  - 2025
TI  - Efficiency of viscous angular momentum transport in dissipating Be binaries
JF  - ASTROPHYSICS AND SPACE SCIENCE
VL  - 370
IS  - 10
SP  - 1-20
EP  - 1-20
PB  - SPRINGER
SN  - 0004640X
KW  - Be stars (142)
KW  - Binary stars(154)
KW  - Hydrodynamics (1963)
KW  - Angular momentum transport
UR  - https://link.springer.com/article/10.1007/s10509-025-04494-9
N2  - Angular momentum transport is a fundamental process shaping the structure, evolution, and lifespans of stars and disks across a wide range of astrophysical systems. Be stars offer a valuable environment for studying viscous transport of angular momentum in massive stars, thanks to their rapid rotation, observable decretion disks, and likely absence of strong magnetic fields. This study analyzes angular momentum loss in 40 Be binary simulations spanning a range of orbital separations and companion masses, using a smoothed-particle hydrodynamics (SPH) code. A novel framework is introduced to define the outer disk edge based on the behaviour of the azimuthal velocity, streamlining the analysis of angular momentum transport within the system. Applying this framework reveals that systems with smaller truncation radii tend to reaccrete a larger fraction of their angular momentum during dissipation, thereby inhibiting the stars ability to regulate its surface rotation. Modification of this rate may alter the star’s mass-injection duty cycle or long-term evolutionary track. Finally, a subset of the simulations were post-processed using the Monte Carlo radiative transfer code HDUST, generating synthetic observables including H\alpha line profiles, V-band polarization, and UV polarization. Suggestions for observational verification of the dynamical results are demonstrated using the simulated data.
ER  -

QUIGLEY, Peter; Carol E. JONES; Kenneth GAYLEY; Anahi GRANADA; Stan OWOCKI; Rina G. RAST; Mark W. SUFFAK; Atsuo T. OKAZAKI; Asif UD-DOULA; Jiří KRTIČKA; Alex C. CARCIOFI a Jeremy J. DRAKE. Efficiency of viscous angular momentum transport in dissipating Be binaries. \textit{ASTROPHYSICS AND SPACE SCIENCE}. DORDRECHT: SPRINGER, 2025, roč.~370, č.~10, s.~1-20. ISSN~0004-640X. Dostupné z: https://doi.org/10.1007/s10509-025-04494-9.

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