Properties of giant molecular clouds in NGC 1300

To understand the variations in star formation activity, comparing the properties of giant molecular clouds (GMCs) among environments with different star formation efficiency (SFE) is necessary. We thus focus on a strongly barred galaxy to investigate the impact of the galactic environment on the GMC properties, because the SFE is clearly lower in bar regions than in arm regions.

In this paper, we present the ^12^CO(1-0) observations towards the western bar, arm, and bar-end regions of the strongly barred galaxy NGC1300 with ALMA 12-m array at a high angular resolution of ~40pc. We detected GMCs associated with the dark lanes not only in the arm and bar-end regions but also in the bar region, where massive star formation is not seen. Using the CPROPS algorithm, we identified and characterized 233 GMCs across the observed regions.