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Astrophysics > Solar and Stellar Astrophysics

Title: Frequency and mode identification of γ Doradus from photometric and spectroscopic observations

Abstract: The prototype star for the {\gamma} Doradus class of pulsating variables was studied em- ploying photometric and spectroscopic observations to determine the frequencies and modes of pulsation. The four frequencies found were self-consistent between the obser- vation types and almost identical to those found in previous studies (1.3641 d-1 ,1.8783 d-1 , 1.4742 d-1 and 1.3209 d-1). Three of the frequencies are classified as l, m = (1, 1) pulsations and the other is ambiguous between l = 2 modes. Two frequencies are shown to be stable over twenty years since their first identification. The agreement in ground-based work makes this star an excellent calibrator for the upcoming TESS observations and a standard for continued asteroseismic modelling.
Comments: Accepted for Publication in Monthly Notices of the Royal Astronomical Society, Volume 475, Issue 3, p.3813-3822
Subjects: Solar and Stellar Astrophysics (astro-ph.SR)
DOI: 10.1093/mnras/sty034
Cite as: arXiv:1803.06890 [astro-ph.SR]
  (or arXiv:1803.06890v1 [astro-ph.SR] for this version)

Submission history

From: Emily Brunsden [view email]
[v1] Mon, 19 Mar 2018 12:31:52 GMT (1858kb,D)