Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS): Library of Fallback Rates

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS) : Library of Fallback Rates. / Law-Smith, Jamie A. P.; Coulter, David A.; Guillochon, James; Mockler, Brenna; Ramirez-Ruiz, Enrico.

In: Astrophysical Journal, Vol. 905, No. 2, 141, 22.12.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Law-Smith, JAP, Coulter, DA, Guillochon, J, Mockler, B & Ramirez-Ruiz, E 2020, 'Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS): Library of Fallback Rates', Astrophysical Journal, vol. 905, no. 2, 141. https://doi.org/10.3847/1538-4357/abc489

APA

Law-Smith, J. A. P., Coulter, D. A., Guillochon, J., Mockler, B., & Ramirez-Ruiz, E. (2020). Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS): Library of Fallback Rates. Astrophysical Journal, 905(2), [141]. https://doi.org/10.3847/1538-4357/abc489

Vancouver

Law-Smith JAP, Coulter DA, Guillochon J, Mockler B, Ramirez-Ruiz E. Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS): Library of Fallback Rates. Astrophysical Journal. 2020 Dec 22;905(2). 141. https://doi.org/10.3847/1538-4357/abc489

Author

Law-Smith, Jamie A. P. ; Coulter, David A. ; Guillochon, James ; Mockler, Brenna ; Ramirez-Ruiz, Enrico. / Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS) : Library of Fallback Rates. In: Astrophysical Journal. 2020 ; Vol. 905, No. 2.

Bibtex

@article{922d3c28e15e471283f30b75126f068d,
title = "Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS): Library of Fallback Rates",
abstract = "We present the STARS library, a grid of tidal disruption event (TDE) simulations interpolated to provide the mass fallback rate (dM/dt) to the black hole for a main-sequence star of any stellar mass, stellar age, and impact parameter. We use a one-dimensional stellar evolution code to construct stars with accurate stellar structures and chemical abundances, then perform tidal disruption simulations in a three-dimensional adaptive-mesh hydrodynamics code with a Helmholtz equation of state, in unprecedented resolution: from 131 to 524 cells across the diameter of the star. The interpolated library of fallback rates is available on GitHub (github.com/jamielaw-smith/STARS_library) and version 1.0.0 is archived on Zenodo; one can query the library for any stellar mass, stellar age, and impact parameter. We provide new fitting formulae for important disruption quantities (beta(crit), Delta M, (M) overd dot(peak), t(peak), n(infinity)) as a function of stellar mass, stellar age, and impact parameter. Each of these quantities varies significantly with stellar mass and stellar age, but we are able to reduce all of our simulations to a single relationship that depends only on stellar structure, characterized by a single parameter rho(c)/(rho) over bar, and impact parameter beta. We also find that, in general, more centrally concentrated stars have steeper dM/dt rise slopes and shallower decay slopes. For the same Delta M, the dM/dt shape varies significantly with stellar mass, promising the potential determination of stellar properties from the TDE light curve alone. The dM/dt shape depends strongly on stellar structure and to a certain extent stellar mass, meaning that fitting TDEs using this library offers a better opportunity to determine the nature of the disrupted star and the black hole.",
keywords = "Black hole physics, Active galaxies, Galaxy nuclei, Gravitation, Hydrodynamics, Main sequence stars, Tidal disruption, SUPERMASSIVE BLACK-HOLES, DISC FORMATION, EVOLUTION, GALAXIES, CLUSTER, MASSES, HYDRODYNAMICS, SIMULATIONS, COMPRESSION, ENCOUNTERS",
author = "Law-Smith, {Jamie A. P.} and Coulter, {David A.} and James Guillochon and Brenna Mockler and Enrico Ramirez-Ruiz",
year = "2020",
month = dec,
day = "22",
doi = "10.3847/1538-4357/abc489",
language = "English",
volume = "905",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - Stellar Tidal Disruption Events with Abundances and Realistic Structures (STARS)

T2 - Library of Fallback Rates

AU - Law-Smith, Jamie A. P.

AU - Coulter, David A.

AU - Guillochon, James

AU - Mockler, Brenna

AU - Ramirez-Ruiz, Enrico

PY - 2020/12/22

Y1 - 2020/12/22

N2 - We present the STARS library, a grid of tidal disruption event (TDE) simulations interpolated to provide the mass fallback rate (dM/dt) to the black hole for a main-sequence star of any stellar mass, stellar age, and impact parameter. We use a one-dimensional stellar evolution code to construct stars with accurate stellar structures and chemical abundances, then perform tidal disruption simulations in a three-dimensional adaptive-mesh hydrodynamics code with a Helmholtz equation of state, in unprecedented resolution: from 131 to 524 cells across the diameter of the star. The interpolated library of fallback rates is available on GitHub (github.com/jamielaw-smith/STARS_library) and version 1.0.0 is archived on Zenodo; one can query the library for any stellar mass, stellar age, and impact parameter. We provide new fitting formulae for important disruption quantities (beta(crit), Delta M, (M) overd dot(peak), t(peak), n(infinity)) as a function of stellar mass, stellar age, and impact parameter. Each of these quantities varies significantly with stellar mass and stellar age, but we are able to reduce all of our simulations to a single relationship that depends only on stellar structure, characterized by a single parameter rho(c)/(rho) over bar, and impact parameter beta. We also find that, in general, more centrally concentrated stars have steeper dM/dt rise slopes and shallower decay slopes. For the same Delta M, the dM/dt shape varies significantly with stellar mass, promising the potential determination of stellar properties from the TDE light curve alone. The dM/dt shape depends strongly on stellar structure and to a certain extent stellar mass, meaning that fitting TDEs using this library offers a better opportunity to determine the nature of the disrupted star and the black hole.

AB - We present the STARS library, a grid of tidal disruption event (TDE) simulations interpolated to provide the mass fallback rate (dM/dt) to the black hole for a main-sequence star of any stellar mass, stellar age, and impact parameter. We use a one-dimensional stellar evolution code to construct stars with accurate stellar structures and chemical abundances, then perform tidal disruption simulations in a three-dimensional adaptive-mesh hydrodynamics code with a Helmholtz equation of state, in unprecedented resolution: from 131 to 524 cells across the diameter of the star. The interpolated library of fallback rates is available on GitHub (github.com/jamielaw-smith/STARS_library) and version 1.0.0 is archived on Zenodo; one can query the library for any stellar mass, stellar age, and impact parameter. We provide new fitting formulae for important disruption quantities (beta(crit), Delta M, (M) overd dot(peak), t(peak), n(infinity)) as a function of stellar mass, stellar age, and impact parameter. Each of these quantities varies significantly with stellar mass and stellar age, but we are able to reduce all of our simulations to a single relationship that depends only on stellar structure, characterized by a single parameter rho(c)/(rho) over bar, and impact parameter beta. We also find that, in general, more centrally concentrated stars have steeper dM/dt rise slopes and shallower decay slopes. For the same Delta M, the dM/dt shape varies significantly with stellar mass, promising the potential determination of stellar properties from the TDE light curve alone. The dM/dt shape depends strongly on stellar structure and to a certain extent stellar mass, meaning that fitting TDEs using this library offers a better opportunity to determine the nature of the disrupted star and the black hole.

KW - Black hole physics

KW - Active galaxies

KW - Galaxy nuclei

KW - Gravitation

KW - Hydrodynamics

KW - Main sequence stars

KW - Tidal disruption

KW - SUPERMASSIVE BLACK-HOLES

KW - DISC FORMATION

KW - EVOLUTION

KW - GALAXIES

KW - CLUSTER

KW - MASSES

KW - HYDRODYNAMICS

KW - SIMULATIONS

KW - COMPRESSION

KW - ENCOUNTERS

U2 - 10.3847/1538-4357/abc489

DO - 10.3847/1538-4357/abc489

M3 - Journal article

VL - 905

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 141

ER -

ID: 255161569