The XMM-Newton survey of the Small Magellanic Cloud: XMMU J010633.1−731543 and XMMU J010743.1−715953, two new Be/X-ray binary systems★.

ABSTRACT In the course of the XMM-Newton survey of the Small Magellanic Cloud (SMC), two new bright X-ray sources were discovered exhibiting the spectral characteristics of high-mass X-ray binaries - but revealing only weak evidence for pulsations in just one of the objects (at 153 s in XMMU J010743.1−715953). The accurate X-ray source locations permit the identification of these X-ray sources with Be stars, thereby strongly suggesting that these systems are new Be/X-ray binaries. From blue spectra the proposed classification for XMMU J010633.1−731543 is B0.5-1Ve and for XMMU J010743.1−715953 it is B2IV-Ve. [ABSTRACT FROM AUTHOR]