On the rise times in FU Orionis events

Elisabeth M.A. Borchert; Daniel J. Price; Christophe Pinte; Nicolás Cuello

doi:10.1093/mnrasl/slab123

On the rise times in FU Orionis events

Elisabeth M.A. Borchert, Daniel J. Price, Christophe Pinte, Nicolás Cuello

School of Physics and Astronomy

Research output: Contribution to journal › Article › Research › peer-review

23 Citations (Scopus)

Abstract

We examine whether stellar flyby simulations can initiate FU Orionis outbursts using 3D hydrodynamics simulations coupled to live Monte Carlo radiative transfer. We find that a flyby where the secondary penetrates the circumprimary disc triggers a 1-2 yr rise in the mass accretion rate to 10-4 M⊙ yr-1 that remains high (≳10-5 M⊙ yr-1) for more than a hundred years, similar to the outburst observed in FU Ori. Importantly, we find that the less massive star becomes the dominant accretor, as observed.

Original language	English
Pages (from-to)	L37-L41
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	510
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slab123
Publication status	Published - 1 Feb 2022

Keywords

hydrodynamics
methods: numerical
protoplanetary discs
stars: protostars
stars: variables: T Tauri, Herbig Ae/Be

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10.1093/mnrasl/slab123

Cite this

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title = "On the rise times in FU Orionis events",

abstract = "We examine whether stellar flyby simulations can initiate FU Orionis outbursts using 3D hydrodynamics simulations coupled to live Monte Carlo radiative transfer. We find that a flyby where the secondary penetrates the circumprimary disc triggers a 1-2 yr rise in the mass accretion rate to 10-4 M⊙ yr-1 that remains high (≳10-5 M⊙ yr-1) for more than a hundred years, similar to the outburst observed in FU Ori. Importantly, we find that the less massive star becomes the dominant accretor, as observed.",

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T1 - On the rise times in FU Orionis events

AU - Borchert, Elisabeth M.A.

AU - Price, Daniel J.

AU - Pinte, Christophe

AU - Cuello, Nicolás

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N2 - We examine whether stellar flyby simulations can initiate FU Orionis outbursts using 3D hydrodynamics simulations coupled to live Monte Carlo radiative transfer. We find that a flyby where the secondary penetrates the circumprimary disc triggers a 1-2 yr rise in the mass accretion rate to 10-4 M⊙ yr-1 that remains high (≳10-5 M⊙ yr-1) for more than a hundred years, similar to the outburst observed in FU Ori. Importantly, we find that the less massive star becomes the dominant accretor, as observed.

AB - We examine whether stellar flyby simulations can initiate FU Orionis outbursts using 3D hydrodynamics simulations coupled to live Monte Carlo radiative transfer. We find that a flyby where the secondary penetrates the circumprimary disc triggers a 1-2 yr rise in the mass accretion rate to 10-4 M⊙ yr-1 that remains high (≳10-5 M⊙ yr-1) for more than a hundred years, similar to the outburst observed in FU Ori. Importantly, we find that the less massive star becomes the dominant accretor, as observed.

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KW - methods: numerical

KW - protoplanetary discs

KW - stars: protostars

KW - stars: variables: T Tauri, Herbig Ae/Be

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On the rise times in FU Orionis events

Abstract

Keywords

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Other files and links

Gaps, rings and holes in protoplanetary discs - signs of newborn planets?

Formation and evolution of planetary systems

Cite this

On the rise times in FU Orionis events

Abstract

Keywords

Access to Document

Other files and links

Projects

Gaps, rings and holes in protoplanetary discs - signs of newborn planets?

Formation and evolution of planetary systems

Cite this