Revealing the CO X-factor in Dark Molecular Gas through Sensitive ALMA Absorption Observations
Luo, Gan; Li, Di; Tang, Ningyu; Dawson, J. R.; Dickey, John M.; Bronfman, L.; Qin, Sheng-Li; Gibson, Steven J.; Plambeck, Richard; Finger, Ricardo; Green, Anne; Mardones, Diego; Koo, Bon-Chul; Lo, Nadia
2020，The Astrophysical Journal Letters, Volume 889, Issue 1, id.L4
