A writer mostly associated with a group of stars (6)
I believe the answer is:
aquila
'group of stars' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for aquila that I've seen before include "Italian city" , "Constellation, the Eagle" , "group of stars" , "Altair's constellation" , "Stars gathered together" .)