V551 Aur, an oEA binary with g-mode pulsations
We present time-series CCD photometry of V551 Aur, an eclipsing binary located in the open cluster NGC 2126 that shows δ Scuti-like pulsations. Complete covered light curves in theBand V bands were obtained with high-precision over nine nights. Based on them, a revised orbital period and the first p...
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Veröffentlicht in: | Research in astronomy and astrophysics 2012-06, Vol.12 (6), p.671-677 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We present time-series CCD photometry of V551 Aur, an eclipsing binary located in the open cluster NGC 2126 that shows δ Scuti-like pulsations. Complete covered light curves in theBand V bands were obtained with high-precision over nine nights. Based on them, a revised orbital period and the first photometric solutions were determined. Our eclipsing light-curve synthesis reveals a detached configura- tion for the binary system with a mass-ratio of about 0.73, and the mean density of the pulsating primary component was deduced to be about (0.532±0.005)ρ. A fre- quency analysis of the eclipse-subtracted light curve yields two reliable frequencies at f1=7.727013(c/d) and f2=15.45403(c/d), respectively. With the help of the derived mean density, mode identification was performed. The result suggests that the primary component of V551 Aur is very probably g-mode oscillations. |
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ISSN: | 1674-4527 2397-6209 |
DOI: | 10.1088/1674-4527/12/6/007 |