Non-radial pulsations in the Be/X binaries 4U 0115+63 and SAXJ2103.5+4545

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Abstract

The discovery of non-radial pulsations (NRP) in the Be/X binaries of the Magellanic Clouds (MC, eg. Fabrycky 2005, Coe et al. 2005, Schmidtke & Cowley 2005) provided a new approach to understand these complex systems, and, at the same time, favoured the synergy between two different fields: stellar pulsations and X-ray binaries. This breakthrough was possible thanks to the MACHO and OGLE surveys. However, in our Galaxy, only two Be/X have been reported to show NRP: GROJ2058+42 (Kiziloglu et al. 2007) and LSI+61 235 (Sarty et al. 2009). Our objective is to study the short-term variability of Galactic Be/X binaries, compare them to the Be/X of the MC and to the isolated Galactic Be observed with corot and kepler. We present preliminary results of two Be/X stars, namely 4U 0115+63 and SAX J2103.5+4545 showing multiperiodicity and periodicity respectively, most probable produced by NRP. © International Astronomical Union 2011.

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APA

Gutiérrez-Soto, J., Reig, P., Fabregat, J., & Fox-Machado, L. (2011). Non-radial pulsations in the Be/X binaries 4U 0115+63 and SAXJ2103.5+4545. In Proceedings of the International Astronomical Union (Vol. 6, pp. 505–506). Cambridge University Press. https://doi.org/10.1017/S1743921311011197

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