Asteroseismology of solar-type stars with K2: detection of oscillations in C1 data
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Colleges, School and Institutes
We present the first detections by the NASA K2 Mission of oscillations in solar-type stars, using short-cadence data collected during K2 Campaign 1 (C1). We understand the asteroseismic detection thresholds for C1-like levels of photometric performance, and we can detect oscillations in subgiants having dominant oscillation frequencies around 1000 μHz. Changes to the operation of the fine-guidance sensors are expected to give significant improvements in the high-frequency performance from C3 onwards. A reduction in the excess high-frequency noise by a factor of 2.5 in amplitude would bring main-sequence stars with dominant oscillation frequencies as high as ≃2500 μHz into play as potential asteroseismic targets for K2.
|Number of pages||7|
|Journal||Publications of the Astronomical Society of the Pacific|
|Early online date||9 Sep 2015|
|Publication status||Published - 1 Oct 2015|