Journal
ASTRONOMY & ASTROPHYSICS
Volume 582, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201526615
Keywords
asteroseismology; methods: data analysis; stars: solar-type; stars: rotation; starspots
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG) [SFB 963/1]
- Center for Space Science at NYU Abu Dhabi Institute [73-71210-ADHPG-G1502]
- NASA Science Mission directorate
- NASA [NAS5-26555]
- NASA Office of Space Science [NNX09AF08G]
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In previous work, we identified six Sun-like stars observed by Kepler with exceptionally clear asteroseismic signatures of rotation. Here, we show that five of these stars exhibit surface variability suitable for measuring rotation. We compare the rotation periods obtained from light-curve variability with those from asteroseismology in order to further constrain differential rotation. The two rotation measurement methods are found to agree within uncertainties, suggesting that radial differential rotation is weak, as is the case for the Sun. Furthermore, we find significant discrepancies between ages from asteroseismology and from three different gyrochronology relations, implying that stellar age estimation is problematic even for Sun-like stars.
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