Asteroseismology from multi-month kepler photometry

The evolved sun-like stars KIC 10273246 and KIC 10920273

T. L. Campante, R. Handberg, S. Mathur, T. Appourchaux, T. R. Bedding, W. J. Chaplin, R. A. García, B. Mosser, Othman Benomar, A. Bonanno, E. Corsaro, S. T. Fletcher, P. Gaulme, S. Hekker, C. Karoff, C. Régulo, D. Salabert, G. A. Verner, T. R. White, G. Houdek & 16 others I. M. Brandão, O. L. Creevey, G. Doĝan, Michael Bazot, J. Christensen-Dalsgaard, M. S. Cunha, Y. Elsworth, D. Huber, H. Kjeldsen, M. Lundkvist, J. Molenda-Zakowicz, M. J.P.F.G. Monteiro, D. Stello, B. D. Clarke, F. R. Girouard, J. R. Hall

    Research output: Contribution to journalArticle

    Abstract

    Context. The evolved main-sequence Sun-like stars KIC 10273246 (F-type) and KIC 10920273 (G-type) were observed with the NASA Kepler satellite for approximately ten months with a duty cycle in excess of 90%. Such continuous and long observations are unprecedented for solar-type stars other than the Sun. Aims. We aimed mainly at extracting estimates of p-mode frequencies-as well as of other individual mode parameters-from the power spectra of the light curves of both stars, thus providing scope for a full seismic characterization. Methods. The light curves were corrected for instrumental effects in a manner independent of the Kepler science pipeline. Estimation of individual mode parameters was based both on the maximization of the likelihood of a model describing the power spectrum and on a classic prewhitening method. Finally, we employed a procedure for selecting frequency lists to be used in stellar modeling. Results. A total of 30 and 21 modes of degree l = 0,1,2-spanning at least eight radial orders-have been identified for KIC 10273246 and KIC 10920273, respectively. Two avoided crossings (l = 1 ridge) have been identified for KIC 10273246, whereas one avoided crossing plus another likely one have been identified for KIC 10920273. Good agreement is found between observed and predicted mode amplitudes for the F-type star KIC 10273246, based on a revised scaling relation. Estimates are given of the rotational periods, the parameters describing stellar granulation and the global asteroseismic parameters Δν and νmax.

    Original languageEnglish (US)
    Article numberA6
    JournalAstronomy and Astrophysics
    Volume534
    DOIs
    StatePublished - Sep 26 2011

    Fingerprint

    asteroseismology
    photometry
    sun
    stars
    light curve
    power spectra
    prewhitening
    estimates
    lists
    ridges
    parameter
    scaling
    cycles
    modeling
    method

    Keywords

    • asteroseismology
    • methods: data analysis
    • stars: individual: KIC 10273246
    • stars: individual: KIC 10920273
    • stars: oscillations
    • stars: solar-type

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Campante, T. L., Handberg, R., Mathur, S., Appourchaux, T., Bedding, T. R., Chaplin, W. J., ... Hall, J. R. (2011). Asteroseismology from multi-month kepler photometry: The evolved sun-like stars KIC 10273246 and KIC 10920273. Astronomy and Astrophysics, 534, [A6]. https://doi.org/10.1051/0004-6361/201116620

    Asteroseismology from multi-month kepler photometry : The evolved sun-like stars KIC 10273246 and KIC 10920273. / Campante, T. L.; Handberg, R.; Mathur, S.; Appourchaux, T.; Bedding, T. R.; Chaplin, W. J.; García, R. A.; Mosser, B.; Benomar, Othman; Bonanno, A.; Corsaro, E.; Fletcher, S. T.; Gaulme, P.; Hekker, S.; Karoff, C.; Régulo, C.; Salabert, D.; Verner, G. A.; White, T. R.; Houdek, G.; Brandão, I. M.; Creevey, O. L.; Doĝan, G.; Bazot, Michael; Christensen-Dalsgaard, J.; Cunha, M. S.; Elsworth, Y.; Huber, D.; Kjeldsen, H.; Lundkvist, M.; Molenda-Zakowicz, J.; Monteiro, M. J.P.F.G.; Stello, D.; Clarke, B. D.; Girouard, F. R.; Hall, J. R.

    In: Astronomy and Astrophysics, Vol. 534, A6, 26.09.2011.

    Research output: Contribution to journalArticle

    Campante, TL, Handberg, R, Mathur, S, Appourchaux, T, Bedding, TR, Chaplin, WJ, García, RA, Mosser, B, Benomar, O, Bonanno, A, Corsaro, E, Fletcher, ST, Gaulme, P, Hekker, S, Karoff, C, Régulo, C, Salabert, D, Verner, GA, White, TR, Houdek, G, Brandão, IM, Creevey, OL, Doĝan, G, Bazot, M, Christensen-Dalsgaard, J, Cunha, MS, Elsworth, Y, Huber, D, Kjeldsen, H, Lundkvist, M, Molenda-Zakowicz, J, Monteiro, MJPFG, Stello, D, Clarke, BD, Girouard, FR & Hall, JR 2011, 'Asteroseismology from multi-month kepler photometry: The evolved sun-like stars KIC 10273246 and KIC 10920273', Astronomy and Astrophysics, vol. 534, A6. https://doi.org/10.1051/0004-6361/201116620
    Campante, T. L. ; Handberg, R. ; Mathur, S. ; Appourchaux, T. ; Bedding, T. R. ; Chaplin, W. J. ; García, R. A. ; Mosser, B. ; Benomar, Othman ; Bonanno, A. ; Corsaro, E. ; Fletcher, S. T. ; Gaulme, P. ; Hekker, S. ; Karoff, C. ; Régulo, C. ; Salabert, D. ; Verner, G. A. ; White, T. R. ; Houdek, G. ; Brandão, I. M. ; Creevey, O. L. ; Doĝan, G. ; Bazot, Michael ; Christensen-Dalsgaard, J. ; Cunha, M. S. ; Elsworth, Y. ; Huber, D. ; Kjeldsen, H. ; Lundkvist, M. ; Molenda-Zakowicz, J. ; Monteiro, M. J.P.F.G. ; Stello, D. ; Clarke, B. D. ; Girouard, F. R. ; Hall, J. R. / Asteroseismology from multi-month kepler photometry : The evolved sun-like stars KIC 10273246 and KIC 10920273. In: Astronomy and Astrophysics. 2011 ; Vol. 534.
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    title = "Asteroseismology from multi-month kepler photometry: The evolved sun-like stars KIC 10273246 and KIC 10920273",
    abstract = "Context. The evolved main-sequence Sun-like stars KIC 10273246 (F-type) and KIC 10920273 (G-type) were observed with the NASA Kepler satellite for approximately ten months with a duty cycle in excess of 90{\%}. Such continuous and long observations are unprecedented for solar-type stars other than the Sun. Aims. We aimed mainly at extracting estimates of p-mode frequencies-as well as of other individual mode parameters-from the power spectra of the light curves of both stars, thus providing scope for a full seismic characterization. Methods. The light curves were corrected for instrumental effects in a manner independent of the Kepler science pipeline. Estimation of individual mode parameters was based both on the maximization of the likelihood of a model describing the power spectrum and on a classic prewhitening method. Finally, we employed a procedure for selecting frequency lists to be used in stellar modeling. Results. A total of 30 and 21 modes of degree l = 0,1,2-spanning at least eight radial orders-have been identified for KIC 10273246 and KIC 10920273, respectively. Two avoided crossings (l = 1 ridge) have been identified for KIC 10273246, whereas one avoided crossing plus another likely one have been identified for KIC 10920273. Good agreement is found between observed and predicted mode amplitudes for the F-type star KIC 10273246, based on a revised scaling relation. Estimates are given of the rotational periods, the parameters describing stellar granulation and the global asteroseismic parameters Δν and νmax.",
    keywords = "asteroseismology, methods: data analysis, stars: individual: KIC 10273246, stars: individual: KIC 10920273, stars: oscillations, stars: solar-type",
    author = "Campante, {T. L.} and R. Handberg and S. Mathur and T. Appourchaux and Bedding, {T. R.} and Chaplin, {W. J.} and Garc{\'i}a, {R. A.} and B. Mosser and Othman Benomar and A. Bonanno and E. Corsaro and Fletcher, {S. T.} and P. Gaulme and S. Hekker and C. Karoff and C. R{\'e}gulo and D. Salabert and Verner, {G. A.} and White, {T. R.} and G. Houdek and Brand{\~a}o, {I. M.} and Creevey, {O. L.} and G. Doĝan and Michael Bazot and J. Christensen-Dalsgaard and Cunha, {M. S.} and Y. Elsworth and D. Huber and H. Kjeldsen and M. Lundkvist and J. Molenda-Zakowicz and Monteiro, {M. J.P.F.G.} and D. Stello and Clarke, {B. D.} and Girouard, {F. R.} and Hall, {J. R.}",
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    TY - JOUR

    T1 - Asteroseismology from multi-month kepler photometry

    T2 - The evolved sun-like stars KIC 10273246 and KIC 10920273

    AU - Campante, T. L.

    AU - Handberg, R.

    AU - Mathur, S.

    AU - Appourchaux, T.

    AU - Bedding, T. R.

    AU - Chaplin, W. J.

    AU - García, R. A.

    AU - Mosser, B.

    AU - Benomar, Othman

    AU - Bonanno, A.

    AU - Corsaro, E.

    AU - Fletcher, S. T.

    AU - Gaulme, P.

    AU - Hekker, S.

    AU - Karoff, C.

    AU - Régulo, C.

    AU - Salabert, D.

    AU - Verner, G. A.

    AU - White, T. R.

    AU - Houdek, G.

    AU - Brandão, I. M.

    AU - Creevey, O. L.

    AU - Doĝan, G.

    AU - Bazot, Michael

    AU - Christensen-Dalsgaard, J.

    AU - Cunha, M. S.

    AU - Elsworth, Y.

    AU - Huber, D.

    AU - Kjeldsen, H.

    AU - Lundkvist, M.

    AU - Molenda-Zakowicz, J.

    AU - Monteiro, M. J.P.F.G.

    AU - Stello, D.

    AU - Clarke, B. D.

    AU - Girouard, F. R.

    AU - Hall, J. R.

    PY - 2011/9/26

    Y1 - 2011/9/26

    N2 - Context. The evolved main-sequence Sun-like stars KIC 10273246 (F-type) and KIC 10920273 (G-type) were observed with the NASA Kepler satellite for approximately ten months with a duty cycle in excess of 90%. Such continuous and long observations are unprecedented for solar-type stars other than the Sun. Aims. We aimed mainly at extracting estimates of p-mode frequencies-as well as of other individual mode parameters-from the power spectra of the light curves of both stars, thus providing scope for a full seismic characterization. Methods. The light curves were corrected for instrumental effects in a manner independent of the Kepler science pipeline. Estimation of individual mode parameters was based both on the maximization of the likelihood of a model describing the power spectrum and on a classic prewhitening method. Finally, we employed a procedure for selecting frequency lists to be used in stellar modeling. Results. A total of 30 and 21 modes of degree l = 0,1,2-spanning at least eight radial orders-have been identified for KIC 10273246 and KIC 10920273, respectively. Two avoided crossings (l = 1 ridge) have been identified for KIC 10273246, whereas one avoided crossing plus another likely one have been identified for KIC 10920273. Good agreement is found between observed and predicted mode amplitudes for the F-type star KIC 10273246, based on a revised scaling relation. Estimates are given of the rotational periods, the parameters describing stellar granulation and the global asteroseismic parameters Δν and νmax.

    AB - Context. The evolved main-sequence Sun-like stars KIC 10273246 (F-type) and KIC 10920273 (G-type) were observed with the NASA Kepler satellite for approximately ten months with a duty cycle in excess of 90%. Such continuous and long observations are unprecedented for solar-type stars other than the Sun. Aims. We aimed mainly at extracting estimates of p-mode frequencies-as well as of other individual mode parameters-from the power spectra of the light curves of both stars, thus providing scope for a full seismic characterization. Methods. The light curves were corrected for instrumental effects in a manner independent of the Kepler science pipeline. Estimation of individual mode parameters was based both on the maximization of the likelihood of a model describing the power spectrum and on a classic prewhitening method. Finally, we employed a procedure for selecting frequency lists to be used in stellar modeling. Results. A total of 30 and 21 modes of degree l = 0,1,2-spanning at least eight radial orders-have been identified for KIC 10273246 and KIC 10920273, respectively. Two avoided crossings (l = 1 ridge) have been identified for KIC 10273246, whereas one avoided crossing plus another likely one have been identified for KIC 10920273. Good agreement is found between observed and predicted mode amplitudes for the F-type star KIC 10273246, based on a revised scaling relation. Estimates are given of the rotational periods, the parameters describing stellar granulation and the global asteroseismic parameters Δν and νmax.

    KW - asteroseismology

    KW - methods: data analysis

    KW - stars: individual: KIC 10273246

    KW - stars: individual: KIC 10920273

    KW - stars: oscillations

    KW - stars: solar-type

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    U2 - 10.1051/0004-6361/201116620

    DO - 10.1051/0004-6361/201116620

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    JO - Astronomy and Astrophysics

    JF - Astronomy and Astrophysics

    SN - 0004-6361

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