Discovery and disentangling of multi-mode delta-Sct pulsations in the eclipsing binary V994 Her

Details Discovery and disentangling of multi-mode delta-Sct pulsations in the eclipsing binary V994 Her Discovery and disentangling of multi-mode delta-Sct pulsations in the eclipsing binary V994 Her

2005-11-14

arxiv.org/abs/astro-ph/0511399v1

Astronomy and Astrophysics

Astrophysics

submitted on Oct 27 to IBVS

Scientific paper

Accurate and extensive photoelectric photometry has been obtained of V994 Her which was discovered as an eclipsing binary by Hipparcos satellite. A marked pulsation activity is evident in the light-curve, with periods 0.152100488, 0.116836079 and 0.09466580 day that appears to be the contemporanous presence of fundamental, first and second overtone periods of a multi-mode delta-Sct pulsation. The latter is observed to remain stable in amplitude and phase over the whole observaing campaign that lasted between June 10, 2002 and July 15, 2004.

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