HERBIG-HARO OBJECTS Small, molecular clouds often occurring in pairs. They are thought to be where jets from young stars or protostars are colliding with the surrounding interstellar material.
HERTSPRUNG-RUSSELL (HR) DIAGRAM
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Herbig-Haro objects Clouds of dust and gas that are either part of high-speed jets of gas streaming away from very young stars, or clouds of gas that have been hit by such jets.
Herbig-Haro objects are formed when highly energized particles--usually electrons and protons--are ejected from a young star and collide with nearby clouds of interstellar dust and gas.
Herbig-Haro objects (NASA Thesaurus) Celestial objects having many of the characteristics of a T Tauri star (e.g., their spectra show a weak continuum with strong emission lines), believed to be stars in the very early stages of development.
All Herbig-Haro objects have been found within the boundaries of dark clouds and are strong sources of infrared radiation. HH objects are created when fast-moving jets of material from a newborn star collide with the interstellar medium.
These newly-born stars emit jets of gas along their axis of rotation, producing small patches of nebulosity known as Herbig-Haro objects.
Main sequence ...
Examples of these Herbig-Haro objects (HH; named after George Herbig and Guillermo Haro who independently discovered this type of object) are shown in the images below.
Known as Herbig-Haro objects since their discovery in the early 1950s, these lobes typically extend a few light-years in length, have masses similar or larger than the developing star itself, ...
An object with many of the characteristics of a T Tauri star (e.g., its spectrum shows a weak continuum with strong emission lines), believed to be a star in the very early stages of evolution. All known Herbig-Haro objects have been found within the ...
They are classified as planetary nebulae, supernova remnants, and diffuse nebulae, including reflecting, emission, and dark nebulae. Small, very bright nebulae called Herbig-Haro objects are found in dense interstellar clouds and are probably the ...
 See also: Mass, Earth, Herbig-Haro Object, Light, Star
  
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