Herbig had initially paid little attention to the objects he had discovered, being primarily concerned with the nearby stars, but on hearing Haro's findings he carried out more detailed studies of them.
Herbig spočiatku neprikladal veľký význam telesám, ktoré objavil, keďže sa primárne zaoberal blízkymi hviezdami, ale keď sa dopočul o Harovych zisteniach, urobil podrobnejšie štúdie.