Asteroseismology of Solar-Type Stars with K2: Detection of oscillations in C1 Data

W. J. Chaplin, M. N. Lund, R. Handberg, S. Basu, L. A. Buchhave, T. L. Campante, G. R. Davies, D. Huber, D. W. Latham, C. A. Latham, A. Serenelli, H. M. Antia, T. Appourchaux, W. H. Ball, O. Benomar, L. Casagrande, J. Christensen-Dalsgaard, H. R. Coelho, O. L. Creevey, Y. ElsworthR. A. García, P. Gaulme, S. Hekker, T. Kallinger, C. Karoff, S. D. Kawaler, H. Kjeldsen, M. S. Lundkvist, F. Marcadon, S. Mathur, A. Miglio, B. Mosser, C. Régulo, I. W. Roxburgh, V. Silva Aguirre, D. Stello, K. Verma, T. R. White, T. R. Bedding, T. Barclay, D. L. Buzasi, S. Dehuevels, L. Gizon, G. Houdek, S. B. Howell, D. Salabert, D. R. Soderblom

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)1038-1044
    Number of pages7
    JournalPublications of the Astronomical Society of the Pacific
    Volume127
    Issue number956
    DOIs
    Publication statusPublished - Oct 2015

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