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Evolved Eclipsing Binaries and the Age of the Open Cluster NGC 752
Eric L. Sandquist, Andrew J. Buckner, Matthew D. Shetrone +8
We present analyses of improved photometric and spectroscopic observations for two detached eclipsing binaries at the turnoff of the open cluster NGC 752: the 1.01 day binary DS An…
When Do Stalled Stars Resume Spinning Down? Advancing Gyrochronology with Ruprecht 147
Jason Lee Curtis, Marcel A. Agüeros, Sean P. Matt +17
Recent measurements of rotation periods () in the benchmark open clusters Praesepe (670 Myr), NGC 6811 (1 Gyr), and NGC 752 (1.4 Gyr) demonstrate that, after convergi…
Rotation of solar analogs cross-matching Kepler and Gaia DR2
Jose-Dias do Nascimento, Leandro de Almeida, Eduardo Nunes Velloso +10
A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of precise evolutionary status for these object…
A Temporary Epoch of Stalled Spin-Down for Low-Mass Stars: Insights from NGC 6811 with Gaia and Kepler
Jason Lee Curtis, Marcel A. Agüeros, Stephanie T. Douglas +1
Stellar rotation was proposed as a potential age diagnostic that is precise, simple, and applicable to a broad range of low-mass stars (1 ). Unfortunately, rotation…
K2 rotation periods for low-mass Hyads and a quantitative comparison of the distribution of slow rotators in the Hyades and Praesepe
S. T. Douglas, J. L. Curtis, M. A. Agüeros +4
We analyze K2 light curves for 132 low-mass (~) members of the 600--800~Myr-old Hyades cluster and measure rotation periods ()…
Spectroscopic membership for the populous 300 Myr-old open cluster NGC 3532
D. J. Fritzewski, S. A. Barnes, D. J. James +3
NGC 3532 is an extremely rich open cluster embedded in the Galactic disc, hitherto lacking a comprehensive, documented membership list. We provide membership probabilities from new…