Comparing the spatial and kinematic distribution of gas and young stars around the shell-like structure in the CMa OB1 association

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Table 1

Observational properties of a sample of molecular cores.

Core	Δα	Δδ	RA (J2000)	Dec (J2000)	T_kin	N(¹³CO)	N(H₂)	Outflow	Comment
	(arcsec)	(arcsec)	(^h^m^s)	(° ′ ″)	(K)	(10¹⁶ cm⁻²)	(10²² cm⁻²)
1	−325	165	07 13 30	−12 16 43	8	3.3	2.1	Y
2	−285	130	07 13 33	−12 17 18	8	3.3	2.1	N
3	375	180	07 14 17	−12 16 28	13	5.0	3.3	Y	Broad wings
4	395	245	07 14 18	−12 15 23	13	3.5	2.3	Y	Broad wings
5	390	550	07 14 18	−12 10 18	10	3.8	2.5	Y	Broad wings
6	490	740	07 14 25	−12 07 08	12	1.2	0.8	Y	Small wings
7	520	915	07 14 27	−12 04 13	12	0.7	0.5	Y	Blueshifted wing
8	550	1250	07 14 29	−11 58 38	7	0.7	0.5	N
9	615	1605	07 14 33	−11 52 43	9.5	1.2	0.8	N

Notes. The physical parameters: kinetic temperature(T_kin), and column density (N(¹³CO)) were obtained from averaging the signal over a region of 20′′× 20′′. A value T_kin = 10 K was adopted for Core 5 due to the lack of detection of C¹⁸O.

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