Abstract
New simultaneous photometric and spectroscopic observations of the supersoft X-ray binary RX J0925.7-4758 (MR Vel) have been obtained. These confirm the unusually long orbital period near 3.8 days. An accurate period is determined based on several years of photometric observations. Short-term photometric variability (~0.25 days) is also present, but it does not appear to be strictly periodic. The spectroscopic behavior reveals large-amplitude He II and H velocity curves, indicating that the system is viewed from a moderately high inclination angle. Masses for the component stars are derived. Evidence of a high-velocity jet (outflow velocity of 5350 km s-1) is present at Hα. Its radial velocity curve is very similar to the disk emission lines, suggesting the jet is formed near the compact star. A new model for the system is presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
