Astrophysics (Index)About

Herbig-Haro object

(type of glowing nebula near protostars)

A Herbig-Haro object (HH or HHO) is a small, glowing nebula resulting from the collision of the plasma of a jet from a protostar with the surrounding ISM. They are found on the order of a parsec from the protostar. Sometimes a single such star has two HHs, from opposing jets. They are found in star-forming regions, often near Bok globules.

(protostars,jets,star formation,nebulae,object type)
Further reading:
HHHH 36generic designator