Spectroscopic Pulsational Frequency and Mode Determination of the $\gamma$ Doradus Star HD 189631
We present improvement and confirmation of identified frequencies and pulsation modes for the $\gamma$ Doradus star HD 189631. This work improves upon previous studies by incorporating a significant number of additional spectra and precise determination of frequencies. Four frequencies were identifi...
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Zusammenfassung: | We present improvement and confirmation of identified frequencies and
pulsation modes for the $\gamma$ Doradus star HD 189631. This work improves
upon previous studies by incorporating a significant number of additional
spectra and precise determination of frequencies. Four frequencies were
identified for this star: $1.6774 \pm 0.0002$ d$^{-1}$, $1.4174 \pm 0.0002$
d$^{-1}$, $0.0714 \pm 0.0002$ d$^{-1}$, and $1.8228 \pm 0.0002$ d$^{-1}$ which
were identified with the modes ($l$,$m$) = ($1,+1$), ($1,+1$), ($2,-2$), and
($1,+1$) respectively. These findings are in agreement with the most recent
literature. The prevalence of ($l$,$m$) = ($1,+1$) modes in $\gamma$ Doradus
stars is starting to become apparent and we discuss this result. |
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DOI: | 10.48550/arxiv.1406.6467 |