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Resolving the pulsations of the subdwarf B star KPD 2109+4401 | | A.-Y. Zhou
; M.D. Reed
; S. Harms
; D.M. Terndrup
; D. An
; S. Zola
; K. D. Gazeas
; P. G. Niarchos
; W. Ogloza
; A. Baran
; G. W. Wolf
; | | Date: |
30 Nov 2005 | | Journal: | Mon.Not.Roy.Astron.Soc. 367 (2006) 179-185 | | Abstract: | We present the results of extensive time series photometry of the pulsating subdwarf B star KPD 2109+4401. Our data set consists of 29 data runs with a total length of 182.6 hours over 31 days, collected at five observatories in 2004. These data are comprised of high signal-to-noise observations acquired with larger telescopes and wider time coverage observations obtained with smaller telescopes. They are sufficient to resolve the pulsation structure to 0.4 $mu$Hz and are the most extensive data set for this star to date. With these data, we identify eight pulsation frequencies extending from 4701 to 5481 $mu$Hz, corresponding to periods of 182 to 213 s. The pulsation frequencies and their amplitudes are examined over several time-scales with some frequencies showing amplitude variability. | | Source: | arXiv, astro-ph/0511827 | | Services: | Forum | Review | PDF | Favorites | |
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