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. HoudekI. 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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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.",
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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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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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