Constraining the evolution of stellar rotation using solar twins
| Autor: | Diego, Lorenzo-Oliveira, Jorge, Meléndez, Jhon, Yana , Galarza, Geisa, Ponte, Leonardo, A dosundefined, Santos, Spina, Lorenzo, Megan, Bedell, Iván, Ramírez, Jacob, L Bean, Martin, Asplund |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
010308 nuclear & particles physics Stellar rotation FOS: Physical sciences Astronomy and Astrophysics Function (mathematics) Astrophysics 01 natural sciences Rossby number Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences Solar rotation Astrophysics::Solar and Stellar Astrophysics Gyrochronology Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Monthly Notices of the Royal Astronomical Society: Letters |
| Popis: | The stellar Rotation $vs.$ Age relation is commonly considered as 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 ($Ro_{\rm crit}$) were estimated for the entire rotational sample. Our analysis favors the smooth rotational evolution scenario and suggests that, if the magnetic weakened breaking scenario takes place at all, it should arise after $Ro_{\rm crit}\gtrsim2.29$ or ages $\gtrsim$5.3 Gyr (at 95$\%$ confidence level). 5 pages, 3 figures, accepted for publication in MNRAS |
| Databáze: | OpenAIRE |
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