Constraining the evolution of stellar rotation using solar twins

DIego Lorenzo-Oliveira; Jorge Meléndez; Jhon Yana Galarza; Geisa Ponte; Leonardo A. Dos Santos; Lorenzo Spina; Megan Bedell; Iván Ramírez; Jacob L. Bean; Martin Asplund

doi:10.1093/mnrasl/slz034

Constraining the evolution of stellar rotation using solar twins

DIego Lorenzo-Oliveira^*, Jorge Meléndez, Jhon Yana Galarza, Geisa Ponte, Leonardo A. Dos Santos, Lorenzo Spina, Megan Bedell, Iván Ramírez, Jacob L. Bean, Martin Asplund

^*Corresponding author for this work

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

36 Citations (Scopus)

Abstract

The stellar rotation versus age relation is commonly considered a useful tool to derive reliable ages for Sun-like stars. However, in the light of Kepler data, the presence of apparently old and fast rotators that do not obey the usual gyrochronology relations led to the hypothesis of weakened magnetic breaking in some stars. In this letter, we constrain the solar rotation evolutionary track using solar twins. Predicted rotational periods as a function of mass, age, [Fe/H], and given critical Rossby number (Ro_crit) were estimated for the entire rotational sample. Our analysis favours the smooth rotational evolution scenario and suggests that if the magnetic weakened breaking scenario takes place at all, it should arise after Ro_crit 2.29 or ages 5.3 Gyr (at 95 per cent confidence level).

Original language	English
Pages (from-to)	L68-L72
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	485
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slz034
Publication status	Published - 1 May 2019

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title = "Constraining the evolution of stellar rotation using solar twins",

abstract = "The stellar rotation versus age relation is commonly considered a useful tool to derive reliable ages for Sun-like stars. However, in the light of Kepler data, the presence of apparently old and fast rotators that do not obey the usual gyrochronology relations led to the hypothesis of weakened magnetic breaking in some stars. In this letter, we constrain the solar rotation evolutionary track using solar twins. Predicted rotational periods as a function of mass, age, [Fe/H], and given critical Rossby number (Rocrit) were estimated for the entire rotational sample. Our analysis favours the smooth rotational evolution scenario and suggests that if the magnetic weakened breaking scenario takes place at all, it should arise after Rocrit 2.29 or ages 5.3 Gyr (at 95 per cent confidence level).",

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doi = "10.1093/mnrasl/slz034",

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T1 - Constraining the evolution of stellar rotation using solar twins

AU - Lorenzo-Oliveira, DIego

AU - Meléndez, Jorge

AU - Yana Galarza, Jhon

AU - Ponte, Geisa

AU - Dos Santos, Leonardo A.

AU - Spina, Lorenzo

AU - Bedell, Megan

AU - Ramírez, Iván

AU - Bean, Jacob L.

AU - Asplund, Martin

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The stellar rotation versus age relation is commonly considered a useful tool to derive reliable ages for Sun-like stars. However, in the light of Kepler data, the presence of apparently old and fast rotators that do not obey the usual gyrochronology relations led to the hypothesis of weakened magnetic breaking in some stars. In this letter, we constrain the solar rotation evolutionary track using solar twins. Predicted rotational periods as a function of mass, age, [Fe/H], and given critical Rossby number (Rocrit) were estimated for the entire rotational sample. Our analysis favours the smooth rotational evolution scenario and suggests that if the magnetic weakened breaking scenario takes place at all, it should arise after Rocrit 2.29 or ages 5.3 Gyr (at 95 per cent confidence level).

AB - The stellar rotation versus age relation is commonly considered a useful tool to derive reliable ages for Sun-like stars. However, in the light of Kepler data, the presence of apparently old and fast rotators that do not obey the usual gyrochronology relations led to the hypothesis of weakened magnetic breaking in some stars. In this letter, we constrain the solar rotation evolutionary track using solar twins. Predicted rotational periods as a function of mass, age, [Fe/H], and given critical Rossby number (Rocrit) were estimated for the entire rotational sample. Our analysis favours the smooth rotational evolution scenario and suggests that if the magnetic weakened breaking scenario takes place at all, it should arise after Rocrit 2.29 or ages 5.3 Gyr (at 95 per cent confidence level).

KW - Sun: rotation

KW - stars: fundamental parameters

KW - stars: rotation

KW - stars: solar-type

UR - http://www.scopus.com/inward/record.url?scp=85069445333&partnerID=8YFLogxK

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DO - 10.1093/mnrasl/slz034

M3 - Article

SN - 1745-3925

VL - 485

SP - L68-L72

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Constraining the evolution of stellar rotation using solar twins

Abstract

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