Open Access

Table B.1

Gas density of the hydrogen atoms in the head and tail regions. nHI and nco are estimated with the HI line and 12CO (J = 1 − 0) line data, respectively.

Velocity range [km s−1] −7.23 − −5.59 −6.41 − −3.94
nHI at head [cm−3] 42 59
nCO at head [cm−3] 73 66
nHI at tail [cm−3] 38 55
nCO at tail [cm−3] 137 191

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