2007
DOI: 10.1111/j.1365-2966.2007.12337.x
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On the nature of the upper atmospheric variability in the rapidly oscillating Ap star HD 134214★

Abstract: Recently, we discovered an entirely new type of variability in the upper atmospheres of rapidly oscillating Ap (roAp) stars. This manifests itself in amplitude modulation of the radial velocities that has not been previously detected in photometric studies of the same stars. To study this new variability further we obtained a full night, 8.85 h, of high time resolution (70 s), high spectral resolution (R = 105 000), high signal-to-noise ratio (on average S/N ∼ 130) data with Ultraviolet and Visual Echelle Spec… Show more

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Cited by 25 publications
(33 citation statements)
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References 50 publications
(78 reference statements)
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“…8, our results of a very conservative analysis for HD 134214 show that we can confirm most frequencies reported by Kurtz et al (2007). There is a more or less A135, page 9 of 11 regular frequency spacing that can be found throughout the region between 2600 and 3000 µHz.…”
Section: The Pulsation Of Hd 134214 -A Twin Of Hd 24712?supporting
confidence: 77%
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“…8, our results of a very conservative analysis for HD 134214 show that we can confirm most frequencies reported by Kurtz et al (2007). There is a more or less A135, page 9 of 11 regular frequency spacing that can be found throughout the region between 2600 and 3000 µHz.…”
Section: The Pulsation Of Hd 134214 -A Twin Of Hd 24712?supporting
confidence: 77%
“…Most of the frequencies line up at ν mod 67.63 µHz ≈ 10 µHz, but the primary frequency ν 1 does not! Considering only the frequencies that are consistent with Kurtz et al (2007), ν 1 is the only mode that clearly seems to relate to a different spherical degree from the remaining frequencies. Moreover, two of the new candidate frequencies seem to continue the ridge of ν 1 towards lower frequencies.…”
Section: The Pulsation Of Hd 134214 -A Twin Of Hd 24712?mentioning
confidence: 99%
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