Models for the 3D axisymmetric gravitational potential of the Milky Way galaxy - A detailed modelling of the Galactic disk

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Table 1

Structural parameters, local surface densities, and masses of the disk components taken as observational prior information to the Milky Way modelling.

Component	R_d	R_ch	h_z^a	Σ_0d	M_d	R_{d_exp}^b
	(kpc)	(kpc)	(kpc)	(M_⊙ pc^-2)	(10¹⁰M_⊙)	(kpc)

Thin disk	2.12	2.07	0.205	30.2	2.489	2.18
Thick disk	3.05	0.00	0.640	7.0	0.568	3.05
H I disk	9.50	1.90	0.180	17.0	1.184	5.00
H₂ disk	1.48	4.20	0.100	3.0	0.227	1.52

Notes.

^(a)

For the H I and H₂ disks, the scale heights are the z_1/2 parameters expressed in Eq. (4).

^(b)

R_{d_exp} corresponds to the radial exponential scale length fitted to the region of the disk subcomponent where the surface density profile is dominated by the exponential decay.

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