ISM: individual objects: Ou4
ISM: jets and outflows
(ISM:) HII regions
(ISM:) planetary nebulae: general Stars: winds
outflows
Stars: early-type
[SDU.ASTR.GA] Sciences of the Universe/Astrophysics/Galactic Astrophysics
[PHYS.ASTR.GA] Physics/Astrophysics/Galactic Astrophysics
[SDU.ASTR.SR] Sciences of the Universe/Astrophysics/Solar and Stellar Astrophysics
[PHYS.ASTR.SR] Physics/Astrophysics/Solar and Stellar Astrophysics