\documentstyle{preprint}
\input pub.sty
\begin{document}
\title{PRECESSING JETS IN SUPERSOFT X-RAY SOURCES}
\author{K.~A.\ Southwell,\thanks{Dept.\ of Astrophysics, Nuclear Physics Building,
Keble Road, Oxford, OX1 3RH, U.K.} M.\ Livio and J.~E.\
Pringle\thanks{Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA,
U.K.}\\
\\
Space Telescope Science Institute\\
\\
3700 San Martin Drive\\
\\
Baltimore, MD 21218\\
\\
Email addresses: kas@astro.ox.ac.uk, mlivio@stsci.edu, jep@ast.cam.ac.uk}

\pub{The Astrophysical Journal (Letters)}
    
\maketitle  
    
\abstract{We show that the accretion disks in supersoft X-ray sources can, 
in principle, be unstable to radiation-induced warping. Moreover, we derive 
the expected precession timescale for those systems which exhibit jets, and we 
show that, whilst in the system RX~J0513.9-6951 the disk is expected to be 
stable against warping, in CAL~83 precession with a timescale of the older 
of a few months is expected. These findings are fully consistent with the 
presently available observational data.}