Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.conf...25m&link_type=abstract
10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io
Astronomy and Astrophysics
Astronomy
Scientific paper
The Small Magellanic Cloud (SMC) is a well known laboratory to study High-Mass X-ray Binaries (HMXBs), as it harbors an unexpectedly high number of HMXBs. The complementary study of the optical counterparts of the HMXBs detected in X-ray observations reveal the nature of the donor stars and consequently the binaries' properties. Thus, we obtained optical spectra for a number of HMXBs identified in previous Chandra and XMM-Newton surveys of the SMC, using the 2dF spectrograph at the Anglo-Australian Telescope, in order to determine the spectral types of the optical counterparts. We identify at least 17 Be/X-ray binaries Be-XRBs) and an excellent case of a Supergiant B[e]. We present the spectral types of these sources and we discuss them in the context of the general populations of BeXRBs in the Galaxy and the Magellanic Clouds.
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