Wiktionary
circumstellar
a. That surrounds, or revolves around a star
Usage examples of "circumstellar".
Four previous ten-micron emission sources had proved to be false alarmssuper-giants with circumstellar emission shells that were probably heated dust grains, not worth slowing down for.
Whether these planets are the remnants of an earlier planetary system that somehow survived the supernova explosion that produced the pulsar, or whether they formed from the resulting circumstellar accretion disk subsequent to the supernova explosion, we do not know.