Letter to the Editor
A transient supersoft X-ray source in the Large Magellanic Cloud *
Marina Orio 1, 2,
Massimo Della Valle 3,
Giuseppe Massone 1 and
Hakk Ögelman 2
Received 11 March 1997 / Accepted 1 April 1997
We present new X-ray data with an improved position for the supersoft X-ray source RX J0537.7-7034 and propose a candidate for the optical identification. The X-ray source had an "on" and an "off" state and was variable on a time scale of months. The proposed optical counterpart is displaced by only 9 arcsec; it is a blue variable star whith an amplitude modulation in the optical light curve. The optical spectrum shows a blue continuum and the He II 4686 emission line.
Key words: Accretion, accretion disks Stars: binaries: close; white dwarfs X-rays: stars.
Send offprint requests to: M. Orio
© European Southern Observatory (ESO) 1997
Online publication: May 5, 1998