Orbital dynamics in galactic potentials under mass transfer

Open Access

Table 1.

Parameters obtained from the TNC and MCMC methods.

	Initial	TNC	MCMC
			Median	MLE
a [kpc]	4.5	9.150	$9 . 190_{- 0.041}^{+ 0.042}$ $9.190^{+0.042}_{-0.041}$	9.179
c [kpc]	0.25	0.253	$0 . 265_{- 0.003}^{+ 0.003}$ $0.265^{+0.003}_{-0.003}$	0.265
d [kpc]	183	124.9	$129 . 0_{- 12.4}^{+ 13.7}$ $129.0^{+13.7}_{-12.4}$	126.3

A [kpc km s⁻¹]	1.29 ⋅ 10⁵	2.29 ⋅ 10⁵	$(2 . 23_{- 0.021}^{+ 0.021}) \cdot 10^{5}$ $(2.23^{+0.021}_{-0.021})\cdot 10^{5}$	2.22 ⋅ 10⁵
C [kpc km s⁻¹]	8.6 ⋅ 10⁴	6.48 ⋅ 10⁴	$(6 . 60_{- 0.053}^{+ 0.053}) \cdot 10^{4}$ $(6.60^{+0.053}_{-0.053})\cdot 10^{4}$	6.60 ⋅ 10⁴
D [kpc km s⁻¹]	6.9 ⋅ 10⁶	1.23 ⋅ 10⁷	$(1 . 34_{- 0.23}^{+ 0.27}) \cdot 10^{7}$ $(1.34^{+0.27}_{-0.23})\cdot 10^{7}$	1.29 ⋅ 10⁷

Notes. The final parameters used in the fitting of the rotation curve are indicated in green. The scaling height b was kept at a constant 0.25 kpc.

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