RCW 42
RCW 42 is a giant H [II region] in the Milky Way.
It contains DBS2003 38, a deeply embedded infrared cluster.
It lies at the western edge of the immense galactic chimney GSH 277+00+36. Not much research has been done on RCW 42, which is unusual, given that its status as a giant H II region suggests that it is one of the greatest and largest regions of star formation in the Milky Way.