 Early stars of less than 2 M ☉ are called T Tauri stars , while those with greater mass are Herbig Ae / Be stars . These newly formed stars emit jets of gas along their axis of rotation , which may reduce the angular momentum of the collapsing star and result in small patches of nebulosity known as Herbig – Haro objects . These jets , in combination with radiation from nearby massive stars , may help to drive away the surrounding cloud from which the star was formed . 
 Early stars of less than 2 M ☉ are called T Tauri stars , while those with greater mass <a href='drop_aux' title='1'><mark>are</mark></a>Herbig Ae / Be stars . These newly formed stars emit jets of gas along their axis of rotation , which may reduce the angular momentum of the collapsing star and result in small patches of nebulosity known as Herbig – Haro <a href='uninflect' title='2'><mark>objects</mark></a> . These jets , in combination with radiation from nearby massive stars , may help to drive away the surrounding cloud from which the star was formed . 
Early stars of less than 2 M ☉ r called T Tauri stars , while those w/ greater mass Herbig Ae / b stars . These newly formed stars emit jets of gas along their axis of rotation , which may reduce da angular momentum of tdacollapsing star and result in small patches of nebulosity known as Herbig – Haro object . These jets , in combination with radiation from nearby massive stars , may help to drive away the surrounding cloud from which the star was formed .