The Age and Distance of the Kepler Open Cluster NGC 6811 from an Eclipsing Binary, Turnoff Star Pulsation, and Giant Asteroseismology

@article{Sandquist2016TheAA,
  title={The Age and Distance of the Kepler Open Cluster NGC 6811 from an Eclipsing Binary, Turnoff Star Pulsation, and Giant Asteroseismology},
  author={Eric L. Sandquist and Jens Jessen-Hansen and Matthew D. Shetrone and Karsten Brogaard and S{\o}ren Meibom and Marika Leitner and Dennis Stello and Hans Bruntt and Victoria Antoci and Jerome A. Orosz and Frank Grundahl and S{\o}ren Frandsen},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2016}
}
We present the analysis of an eccentric, partially eclipsing long-period ($P=19.23$ d) binary system KIC 9777062 that contains main sequence stars near the turnoff of the intermediate age open cluster NGC 6811. The primary is a metal-lined Am star with a possible convective blueshift to its radial velocities, and one star (probably the secondary) is likely to be a $\gamma$ Dor pulsator. The component masses are $1.603\pm0.006$(stat.)$\pm0.016$(sys.) and $1.419\pm0.003\pm0.008 M_\odot$, and the… Expand
Variability in the Massive Open Cluster NGC 1817 from K2: A Rich Population of Asteroseismic Red Clump, Eclipsing Binary, and Main-sequence Pulsating Stars.
TLDR
A subset of the giants in NGC 1817 (and in the similarly aged cluster NGC 6811) have ν max and Δν values at or near the maximum observed for core helium-burning stars, indicating they have core masses near the minimum for fully nondegenerate helium ignition. Expand
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References

SHOWING 1-10 OF 119 REFERENCES
A Long-Period Totally Eclipsing Binary Star at the Turnoff of the Open Cluster NGC 6819 Discovered with Kepler
We present the discovery of the totally eclipsing long-period (P = 771.8 d) binary system WOCS 23009 in the old open cluster NGC 6819 that contains both an evolved star near central hydrogenExpand
AGE AND DISTANCE FOR THE OLD OPEN CLUSTER NGC 188 FROM THE ECLIPSING BINARY MEMBER V 12
We present time series radial velocity, and photometric observations of a solar-type double-lined eclipsing binary star (V 12) in the old open cluster NGC?188. We use these data to determine theExpand
ABSOLUTE PROPERTIES OF THE MAIN-SEQUENCE ECLIPSING BINARY STAR BP VULPECULAE
We present 5236 differential observations in the V filter measured by a robotic telescope, as well as radial velocities from spectroscopic observations, of the detached, eccentric 1.9 dayExpand
Absolute dimensions of detached eclipsing binaries – III. The metallic-lined system YZ Cassiopeiae
The bright binary system YZ Cassiopeiae is a remarkable laboratory for studying the Am phenomenon. It consists of a metallic-lined A2 star and an F2 dwarf on a circular orbit, which undergo total andExpand
Absolute dimensions of detached eclipsing binaries – I. The metallic‐lined system WW Aurigae
WWAurigae is a detached eclipsing binary composed of two metallic-lined A-type stars orbiting each other every 2.5 days. We have determined the masses and radii of both components to accuracies ofExpand
NGC 6811: AN INTERMEDIATE-AGE CLUSTER IN THE KEPLER FIELD
NGC 6811 is one of the four open clusters located in the Kepler spacecraft field of view. We obtained UBVRI photometry of the cluster on six nights (four of them photometric) with the 1.08 m Hall andExpand
THE ECLIPSING BINARY V1061 CYGNI: CONFRONTING STELLAR EVOLUTION MODELS FOR ACTIVE AND INACTIVE SOLAR-TYPE STARS
We present spectroscopic and photometric observations of the eclipsing system V1061 Cyg (P = 2.35 days). A third star is visible in the spectrum, and the system is a hierarchical triple. We combineExpand
Variable stars in the open cluster NGC 6811
Abstract We performed a time-series B, V band CCD photometric observations of the open cluster NGC 6811 to search for variable stars. A total number of 16 variables were detected including nine newExpand
Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members - II. Age dependencies and new insights
Context. Models of stellar structure and evolution can be constrained by measuring accurate parameters of detached eclipsing binaries in open clusters. Multiple binary stars provide the means toExpand
Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. I. Measurements, methods, and first results
Context. Models of stellar structure and evolution can be constrained by measuring accurate parameters of detached eclipsing binaries in open clusters. Multiple binary stars provide the means toExpand
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3
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5
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