Mt. Suhora survey - Searching for pulsating M dwarfs in Kepler public dataset

A. S. Baran, L. Fox-Machado, J. Lykke, M. Nielsen, J. H. Telting

Research output: Contribution to journalReview articlepeer-review

Abstract

We present our analysis of Kepler short cadence public data to search for stellar pulsations in M dwarfs. Theoretical calculations predict that these stars may suffer from a fundamental radial mode driven by the nuclear e mechanism. First results published thus far show no significant signal around the expected frequency of 36 c/d down to 1 ppt (parts per thousand). In this paper we include new results obtained from a sample of 86 stars, although a real number of M dwarfs after spectral classification turned out to be small. Unluckily, we have not detected any significant signal typically down to 1-10 ppm (parts per million) in M dwarfs and since the sample of these stars consists of 6 objects only, we cannot make any strong conclusion if the e mechanism drives perturbation in radius to propagate to a detectable amplitude at the surface. As a by-product of our work we provide a spectral classification of 86 Kepler objects, along with their variability and thus far unknown artifacts residing in Kepler photometry.

Original languageEnglish (US)
Pages (from-to)325-343
Number of pages19
JournalActa Astronomica
Volume61
Issue number4
StatePublished - 2011

Keywords

  • Low-mass-Asteroseismology
  • Oscillations (includingpulsations) -stars
  • Stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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