Search for A-F Spectral type pulsating components in Algol-type eclipsing binary systems

Details Search for A-F Spectral type pulsating components in Algol-type eclipsing binary systems Search for A-F Spectral type pulsating components in Algol-type eclipsing binary systems

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...405..231k&link_type=abstract

Astronomy and Astrophysics, v.405, p.231-236 (2003)

Astronomy and Astrophysics

Astrophysics

39

Stars: Binaries: Eclipsing, Stars: Variables: Delta Sct, Stars: Individual: Tw Dra, Rx Hya, Ab Per

Scientific paper

We present the results of a systematic search for pulsating components in Algol-type eclipsing binary systems. A total number of 14 eclipsing binaries with A-F spectral type primary components were observed for 22 nights. We confirmed small-amplitude oscillating features of a recently detected pulsator TW Dra, which has a pulsating period of 0.053 day and a semi-amplitude of about 5 mmag in B-passband. We discovered new pulsating components in two eclipsing binaries of RX Hya and AB Per. The primary component of RX Hya is pulsating with a dominant period of 0.052 day and a semi-amplitude of about 7 mmag. AB Per has also a pulsating component with a period of 0.196 day and a semi-amplitude of about 10 mmag in B-passband. We suggest that these two new pulsators are members of the newly introduced group of mass-accreting pulsating stars in semi-detached Algol-type eclipsing binary systems.
Table 4 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/405/231

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