  Relativistic stellar jets, produced in binary systems called microquasars,
propagate through media with different spatial scales releasing their energy in
the form of work and radiation from radio to gamma rays. There are several
medium-interaction scenarios that these jets can face. In particular, in
relativistic stellar jets the presence of a star is an unavoidable element
whose importance deserves to be studied. In the case of high-mass stars, their
powerful winds are likely to interact dynamically with the jet, but also
low-mass stars in the post-main sequence phase can present dense winds that
will act as an obstacle for the jet propagation. In this work, we present a
semi-qualitative discussion on the importance of the star for the evolution of
relativistic stellar jets.
