Properties of oscillation modes in subgiant stars observed by kepler

Othman Benomar, T. R. Bedding, B. Mosser, D. Stello, K. Belkacem, R. A. Garcia, T. R. White, C. A. Kuehn, S. Deheuvels, J. Christensen-Dalsgaard

    Research output: Contribution to journalArticle

    Abstract

    Mixed modes seen in evolved stars carry information on their deeper layers that can place stringent constraints on their physics and on their global properties (mass, age, etc.). In this study, we present a method to identify and measure all oscillatory mode characteristics (frequency, height, width). Analyzing four subgiant stars, we present the first measure of the effect of the degree of mixture on the ℓ = 1 mixed mode characteristics. We also show that some stars have measurable ℓ = 2 mixed modes and discuss the interest of their measure to constrain the deeper layers of stars.

    Original languageEnglish (US)
    Article number158
    JournalAstrophysical Journal
    Volume767
    Issue number2
    DOIs
    StatePublished - Apr 20 2013

    Fingerprint

    subgiant stars
    oscillation
    oscillations
    stars
    physics

    Keywords

    • asteroseismology
    • methods: data analysis
    • stars: interiors
    • stars: oscillations

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Benomar, O., Bedding, T. R., Mosser, B., Stello, D., Belkacem, K., Garcia, R. A., ... Christensen-Dalsgaard, J. (2013). Properties of oscillation modes in subgiant stars observed by kepler. Astrophysical Journal, 767(2), [158]. https://doi.org/10.1088/0004-637X/767/2/158

    Properties of oscillation modes in subgiant stars observed by kepler. / Benomar, Othman; Bedding, T. R.; Mosser, B.; Stello, D.; Belkacem, K.; Garcia, R. A.; White, T. R.; Kuehn, C. A.; Deheuvels, S.; Christensen-Dalsgaard, J.

    In: Astrophysical Journal, Vol. 767, No. 2, 158, 20.04.2013.

    Research output: Contribution to journalArticle

    Benomar, O, Bedding, TR, Mosser, B, Stello, D, Belkacem, K, Garcia, RA, White, TR, Kuehn, CA, Deheuvels, S & Christensen-Dalsgaard, J 2013, 'Properties of oscillation modes in subgiant stars observed by kepler', Astrophysical Journal, vol. 767, no. 2, 158. https://doi.org/10.1088/0004-637X/767/2/158
    Benomar O, Bedding TR, Mosser B, Stello D, Belkacem K, Garcia RA et al. Properties of oscillation modes in subgiant stars observed by kepler. Astrophysical Journal. 2013 Apr 20;767(2). 158. https://doi.org/10.1088/0004-637X/767/2/158
    Benomar, Othman ; Bedding, T. R. ; Mosser, B. ; Stello, D. ; Belkacem, K. ; Garcia, R. A. ; White, T. R. ; Kuehn, C. A. ; Deheuvels, S. ; Christensen-Dalsgaard, J. / Properties of oscillation modes in subgiant stars observed by kepler. In: Astrophysical Journal. 2013 ; Vol. 767, No. 2.
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    AU - Bedding, T. R.

    AU - Mosser, B.

    AU - Stello, D.

    AU - Belkacem, K.

    AU - Garcia, R. A.

    AU - White, T. R.

    AU - Kuehn, C. A.

    AU - Deheuvels, S.

    AU - Christensen-Dalsgaard, J.

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