A multi-frequency identification study of the SMC X-ray binary AX J0049-732
Abstract
We present a high-resolution multi-frequency identification study of the Small Magellanic Cloud (SMC) region around the newly discovered X-ray pulsar AX J0049-732. ROSAT PSPC images show three X-ray sources near the ASCA source position. We combine X-ray, radio-continuum and optical data to identify these sources. RX J0049.2-7311 and RX J0049.5-7310 did not show long-term time variability nor pulsations during the ROSAT observations and both are not detected in the radio. We identify RX J0049.5-7310 with an emission line star in the catalogue of Meyssonier & Azzopardi (1993). This catalogue contains several known Be/X-ray binaries strongly suggesting the ROSAT source as new Be/X-ray binary. RX J0049.5-7310 is therefore very likely the counterpart of the ASCA X-ray pulsar AX J0049-732. The third source RX J0049.1-7314 is associated with the supernova remnant (SNR) DEM S49 (B0047-735).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 2000
- Bibcode:
- 2000A&A...361..823F
- Keywords:
-
- GALAXIES: MAGELLANIC CLOUDS;
- ISM: INDIVIDUAL OBJECTS: AX J0049-732;
- SNR B0047-735;
- ISM: SUPERNOVA REMNANTS;
- STARS: BINARIES: GENERAL;
- X-RAYS: GALAXIES