Which of the following are small luminous nebulae excited by the jets of nearby protostars?
A) T Tauri stars
B) Bok globules
C) O associations
D) Herbig-Haro objects

Question

Quizplus · Accepted Answer

Herbig-Haro objects are small, luminous nebulae found in star-forming regions, excited by jets emitted from newborn stars (protostars). These jets collide with the surrounding gas and dust, causing the Herbig-Haro objects to glow.

Which of the Following Are Small Luminous Nebulae Excited by the Jets