SIMBAD references

The second survey of the molecular clouds in the Large Magellanic Cloud in ¹²CO (J=1-0) was carried out by NANTEN. The sensitivity of this survey is twice as high as that of the previous NANTEN survey, leading to a detection of molecular clouds with M_CO≳2x10⁴ M_☉. We identified 272 molecular clouds, 230 of which are detected at three or more observed positions. We derived the physical properties, such as size, line width, and virial mass, of the 164 GMCs that have an extent more than the beam size of NANTEN in both the major and minor axes. The CO luminosity and virial mass of the clouds show a good correlation of M_vir∝L^1.1±0.1_CO, with a Spearman rank correlation of 0.8, suggesting that the clouds are in nearly virial equilibrium. Assuming the clouds are in virial equilibrium, we derived an X_CO-factor of ∼7x10²⁰/cm2 (K km/s)^–1. The mass spectrum of the clouds is fitted well by a power law of N_cloud(>M_CO)∝M^{–0.75±0.06}_CO above the completeness limit of 5x10⁴ M_☉. The slope of the mass spectrum becomes steeper if we fit only the massive clouds, e.g., N_cloud(>M_CO)∝M^–1.2±0.2_CO for M_CO≥3x10⁵ M_☉.