[CI] and CO lines across cosmic time

However, there is still a lack of systematic studies of the star-formation scaling relation of CO and [CI] lines across cosmic time on multiple physical scales. We used observations of the ground state transitions of [CI], CO, and [CII], for 885 sources collected from the literature, to infer possible correlations between line luminosities of L' [CI](1-0), L'CO(1-0), and L'[CII] with star formation rates (SFR).

With linear regression, we fit the relations between SFR and molecular mass derived from CO, CI, and CII lines. The relation between [CI] and CO based total molecular masses is weakly super linear. Nevertheless, they can be calibrated against each other.