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À propos de : CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes        

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  • CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes
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  • BVRI CCD-based and near-IR ( J) imaging, together with unfiltered photometry of the hot subdwarf B star PG 0856+121, are reported. Two close, faint, red, point-like sources are resolved. They account for the previously reported IR excess observed in this hot subdwarf. In addition, the new unfiltered differential photometry of PG 0856+121 confirms its previously reported pulsational nature. A comparison with the oscillation modes of stellar models suggests the presence of g modes.
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  • aa10085
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  • © ESO, 2001
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