The Be Star Newsletter, Volume 35 - August 2001

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BeppoSAX survey of Be/X-ray binary candidates

J.M. Torrejón1 and A. Orr2

1 Univ. of Alicante, Department of Physics, EPS, Ap. 99, E-03080, Alicante, Spain
2 Astrophysics Division, Space Science Department of ESA, ESTEC, Postbox 299, NL-2200 AG Noordwijk, The Netherlands

We present a BeppoSAX survey of five Be/X-ray binary candidates. We report on the identification of two of them, HD 110432 and HD 141926, as low luminosity Be/X-ray binaries. For HD 110432 we report on the detection of a pulsation period of   14 ks. Because the luminosity of these sources is low and their spectra do not require non-thermal emission models, these systems are good Be+White Dwarf candidates. If the pulsation period for HD 110432 is confirmed, this system would be the most firm Be+WD candidate found up to date. The other three objects HD 65663, HD 249179 and BD+53 2262 did not show detectable X-ray emission. We argue that, while the properties of BD+53 2262 are still consistent with a quiescent Be+Neutron Star scenario, the lack of detection for the other two objects implies that they are most probably not X-ray binaries.

Accepted by A&A
Preprints from jmt@disc.ua.es
or on the web at http://arXiv.org/abs/astro-ph/0108139


Last modified: August 10, 2001

David McDavid
dam3ma@virginia.edu