Oscillations in Procyon A

First results from a multi-site campaign

S. Hekker, T. Arentoft, H. Kjeldsen, T. R. Bedding, J. Christensen-Dalsgaard, S. Reffert, H. Bruntt, R. P. Butler, L. L. Kiss, S. J. O'Toole, E. Kambe, H. Ando, H. Izumiura, B. Sato, M. Hartmann, A. P. Hatzes, T. Appourchaux, C. Barban, G. Berthomieu, F. Bouchy & 28 others R. A. García, J. C. Lebrun, M. Martić, E. Michel, B. Mosser, P. A.P. Nghiem, J. Provost, R. Samadi, F. Thévenin, S. Turck-Chièze, S. A. Bonanno, S. Benatti, R. U. Claudi, R. Cosentino, S. Leccia, S. Frandsen, K. Brogaard, F. Grundahl, H. C. Stempels, Michael Bazot, T. H. Dall, C. Karoff, F. Carrier, P. Eggenberger, D. Sosnowska, R. A. Wittenmyer, M. Endl, T. S. Metcalfe

    Research output: Contribution to journalArticle

    Abstract

    Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is still unclear. Evolutionary tracks with different ages and different mass fractions of hydrogen in the core pass, within the errors, through the observed position of Procyon A in the Hertzsprung-Russell diagram. For more than15 years several different groups have studied the solar-like oscillations in Procyon A to determine its evolutionary state. Although several studies independently detected power excess in the periodogram, there is no agreement on the actual oscillation frequencies yet. This is probably due to either insufficient high-quality data (i.e., aliasing) or due to intrinsic properties of the star (i.e., short mode lifetimes). Now a spectroscopic multi-site campaign using 10 telescopes world-wide (minimizing aliasing effects) with a total time span of nearly 4 weeks (increase the frequency resolution) is performed to identify frequencies in this star and finally determine its properties and evolutionary state.

    Original languageEnglish (US)
    Article number012059
    JournalJournal of Physics: Conference Series
    Volume118
    Issue number1
    DOIs
    StatePublished - Jul 1 2008

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    stars
    oscillations
    solar oscillations
    Hertzsprung-Russell diagram
    telescopes
    life (durability)
    hydrogen

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Hekker, S., Arentoft, T., Kjeldsen, H., Bedding, T. R., Christensen-Dalsgaard, J., Reffert, S., ... Metcalfe, T. S. (2008). Oscillations in Procyon A: First results from a multi-site campaign. Journal of Physics: Conference Series, 118(1), [012059]. https://doi.org/10.1088/1742-6596/118/1/012059

    Oscillations in Procyon A : First results from a multi-site campaign. / Hekker, S.; Arentoft, T.; Kjeldsen, H.; Bedding, T. R.; Christensen-Dalsgaard, J.; Reffert, S.; Bruntt, H.; Butler, R. P.; Kiss, L. L.; O'Toole, S. J.; Kambe, E.; Ando, H.; Izumiura, H.; Sato, B.; Hartmann, M.; Hatzes, A. P.; Appourchaux, T.; Barban, C.; Berthomieu, G.; Bouchy, F.; García, R. A.; Lebrun, J. C.; Martić, M.; Michel, E.; Mosser, B.; Nghiem, P. A.P.; Provost, J.; Samadi, R.; Thévenin, F.; Turck-Chièze, S.; Bonanno, S. A.; Benatti, S.; Claudi, R. U.; Cosentino, R.; Leccia, S.; Frandsen, S.; Brogaard, K.; Grundahl, F.; Stempels, H. C.; Bazot, Michael; Dall, T. H.; Karoff, C.; Carrier, F.; Eggenberger, P.; Sosnowska, D.; Wittenmyer, R. A.; Endl, M.; Metcalfe, T. S.

    In: Journal of Physics: Conference Series, Vol. 118, No. 1, 012059, 01.07.2008.

    Research output: Contribution to journalArticle

    Hekker, S, Arentoft, T, Kjeldsen, H, Bedding, TR, Christensen-Dalsgaard, J, Reffert, S, Bruntt, H, Butler, RP, Kiss, LL, O'Toole, SJ, Kambe, E, Ando, H, Izumiura, H, Sato, B, Hartmann, M, Hatzes, AP, Appourchaux, T, Barban, C, Berthomieu, G, Bouchy, F, García, RA, Lebrun, JC, Martić, M, Michel, E, Mosser, B, Nghiem, PAP, Provost, J, Samadi, R, Thévenin, F, Turck-Chièze, S, Bonanno, SA, Benatti, S, Claudi, RU, Cosentino, R, Leccia, S, Frandsen, S, Brogaard, K, Grundahl, F, Stempels, HC, Bazot, M, Dall, TH, Karoff, C, Carrier, F, Eggenberger, P, Sosnowska, D, Wittenmyer, RA, Endl, M & Metcalfe, TS 2008, 'Oscillations in Procyon A: First results from a multi-site campaign', Journal of Physics: Conference Series, vol. 118, no. 1, 012059. https://doi.org/10.1088/1742-6596/118/1/012059
    Hekker S, Arentoft T, Kjeldsen H, Bedding TR, Christensen-Dalsgaard J, Reffert S et al. Oscillations in Procyon A: First results from a multi-site campaign. Journal of Physics: Conference Series. 2008 Jul 1;118(1). 012059. https://doi.org/10.1088/1742-6596/118/1/012059
    Hekker, S. ; Arentoft, T. ; Kjeldsen, H. ; Bedding, T. R. ; Christensen-Dalsgaard, J. ; Reffert, S. ; Bruntt, H. ; Butler, R. P. ; Kiss, L. L. ; O'Toole, S. J. ; Kambe, E. ; Ando, H. ; Izumiura, H. ; Sato, B. ; Hartmann, M. ; Hatzes, A. P. ; Appourchaux, T. ; Barban, C. ; Berthomieu, G. ; Bouchy, F. ; García, R. A. ; Lebrun, J. C. ; Martić, M. ; Michel, E. ; Mosser, B. ; Nghiem, P. A.P. ; Provost, J. ; Samadi, R. ; Thévenin, F. ; Turck-Chièze, S. ; Bonanno, S. A. ; Benatti, S. ; Claudi, R. U. ; Cosentino, R. ; Leccia, S. ; Frandsen, S. ; Brogaard, K. ; Grundahl, F. ; Stempels, H. C. ; Bazot, Michael ; Dall, T. H. ; Karoff, C. ; Carrier, F. ; Eggenberger, P. ; Sosnowska, D. ; Wittenmyer, R. A. ; Endl, M. ; Metcalfe, T. S. / Oscillations in Procyon A : First results from a multi-site campaign. In: Journal of Physics: Conference Series. 2008 ; Vol. 118, No. 1.
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    abstract = "Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is still unclear. Evolutionary tracks with different ages and different mass fractions of hydrogen in the core pass, within the errors, through the observed position of Procyon A in the Hertzsprung-Russell diagram. For more than15 years several different groups have studied the solar-like oscillations in Procyon A to determine its evolutionary state. Although several studies independently detected power excess in the periodogram, there is no agreement on the actual oscillation frequencies yet. This is probably due to either insufficient high-quality data (i.e., aliasing) or due to intrinsic properties of the star (i.e., short mode lifetimes). Now a spectroscopic multi-site campaign using 10 telescopes world-wide (minimizing aliasing effects) with a total time span of nearly 4 weeks (increase the frequency resolution) is performed to identify frequencies in this star and finally determine its properties and evolutionary state.",
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    T2 - First results from a multi-site campaign

    AU - Hekker, S.

    AU - Arentoft, T.

    AU - Kjeldsen, H.

    AU - Bedding, T. R.

    AU - Christensen-Dalsgaard, J.

    AU - Reffert, S.

    AU - Bruntt, H.

    AU - Butler, R. P.

    AU - Kiss, L. L.

    AU - O'Toole, S. J.

    AU - Kambe, E.

    AU - Ando, H.

    AU - Izumiura, H.

    AU - Sato, B.

    AU - Hartmann, M.

    AU - Hatzes, A. P.

    AU - Appourchaux, T.

    AU - Barban, C.

    AU - Berthomieu, G.

    AU - Bouchy, F.

    AU - García, R. A.

    AU - Lebrun, J. C.

    AU - Martić, M.

    AU - Michel, E.

    AU - Mosser, B.

    AU - Nghiem, P. A.P.

    AU - Provost, J.

    AU - Samadi, R.

    AU - Thévenin, F.

    AU - Turck-Chièze, S.

    AU - Bonanno, S. A.

    AU - Benatti, S.

    AU - Claudi, R. U.

    AU - Cosentino, R.

    AU - Leccia, S.

    AU - Frandsen, S.

    AU - Brogaard, K.

    AU - Grundahl, F.

    AU - Stempels, H. C.

    AU - Bazot, Michael

    AU - Dall, T. H.

    AU - Karoff, C.

    AU - Carrier, F.

    AU - Eggenberger, P.

    AU - Sosnowska, D.

    AU - Wittenmyer, R. A.

    AU - Endl, M.

    AU - Metcalfe, T. S.

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    N2 - Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is still unclear. Evolutionary tracks with different ages and different mass fractions of hydrogen in the core pass, within the errors, through the observed position of Procyon A in the Hertzsprung-Russell diagram. For more than15 years several different groups have studied the solar-like oscillations in Procyon A to determine its evolutionary state. Although several studies independently detected power excess in the periodogram, there is no agreement on the actual oscillation frequencies yet. This is probably due to either insufficient high-quality data (i.e., aliasing) or due to intrinsic properties of the star (i.e., short mode lifetimes). Now a spectroscopic multi-site campaign using 10 telescopes world-wide (minimizing aliasing effects) with a total time span of nearly 4 weeks (increase the frequency resolution) is performed to identify frequencies in this star and finally determine its properties and evolutionary state.

    AB - Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is still unclear. Evolutionary tracks with different ages and different mass fractions of hydrogen in the core pass, within the errors, through the observed position of Procyon A in the Hertzsprung-Russell diagram. For more than15 years several different groups have studied the solar-like oscillations in Procyon A to determine its evolutionary state. Although several studies independently detected power excess in the periodogram, there is no agreement on the actual oscillation frequencies yet. This is probably due to either insufficient high-quality data (i.e., aliasing) or due to intrinsic properties of the star (i.e., short mode lifetimes). Now a spectroscopic multi-site campaign using 10 telescopes world-wide (minimizing aliasing effects) with a total time span of nearly 4 weeks (increase the frequency resolution) is performed to identify frequencies in this star and finally determine its properties and evolutionary state.

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