A<i>Herschel</i>[C ii] Galactic plane survey
A<i>Herschel</i>[C ii] Galactic plane survey
ABRIDGED: Context: HI and CO large scale surveys of the Milky Way trace the diffuse atomic clouds and the dense shielded regions of molecular hydrogen clouds. However, until recently, we have not had spectrally resolved C+ surveys to characterize the photon dominated interstellar medium, including, the H2 gas without C, …