We present Orion A giant molecular cloud core catalogs , which are based on 1.1 mm map with an angular resolution of 36 \arcsec ( \sim 0.07 pc ) and C ^ { 18 } O ( J =1–0 ) data with an angular resolution of 26.4 \arcsec ( \sim 0.05 pc ) .
We have cataloged 619 dust cores in the 1.1 mm map using the Clumpfind method .
The ranges of the radius , mass , and density of these cores are estimated to be 0.01 – 0.20 pc , 0.6 – 1.2 \times 10 ^ { 2 } M _ { \odot } , and 0.3 \times 10 ^ { 4 } –- 9.2 \times 10 ^ { 6 } cm ^ { -3 } , respectively .
We have identified 235 cores from the C ^ { 18 } O data .
The ranges of the radius , velocity width , LTE mass , and density are 0.13 – 0.34 pc , 0.31 – 1.31 km s ^ { -1 } , 1.0 – 61.8 M _ { \odot } , and ( 0.8 – 17.5 ) \times 10 ^ { 3 } cm ^ { -3 } , respectively .
From the comparison of the spatial distributions between the dust and C ^ { 18 } O cores , four types of spatial relations were revealed : ( 1 ) the peak positions of the dust and C ^ { 18 } O cores agree with each other ( 32.4 % of the C ^ { 18 } O cores ) , ( 2 ) two or more C ^ { 18 } O cores are distributed around the peak position of one dust core ( 10.8 % of the C ^ { 18 } O cores ) , ( 3 ) 56.8 % of the C ^ { 18 } O cores are not associated with any dust cores , and ( 4 ) 69.3 % of the dust cores are not associated with any C ^ { 18 } O cores .
The data sets and analysis are public .