Pulsating components of eclipsing binaries in the ASAS-3 catalog

Details Pulsating components of eclipsing binaries in the ASAS-3 catalog Pulsating components of eclipsing binaries in the ASAS-3 catalog

2007-03-23

arxiv.org/abs/astro-ph/0703614v1

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures, accepted for publication in Acta Astronomica

Scientific paper

As a result of the search among about 11 000 stars from the public ASAS-3 database, we report detection of pulsating components in eleven eclipsing binaries. In particular, we have found three classical Algols, MX Pav, IZ Tel, and VY Mic, with $\delta$ Sct-type primary components. In six other eclipsing binaries, the short-period variability can also be interpreted in terms of $\delta$ Sct-type pulsations, but in these systems both components are probably main-sequence stars. In HD 99612, the pulsation mode shows significant amplitude decrease during the time interval covered by observations. In addition, we find variability in one of the components of the eclipsing and double-lined spectroscopic O-type binary ALS 1135 which we interpret as a $\beta$ Cep-type pulsation. Finally, we find Y Cir to be a good candidate for an SPB star in an eclipsing binary system.

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