The origin and orbit of the old, metal-rich, open cluster NGC 6791 - Insights from kinematics

L. Jílková; G. Carraro; B. Jungwiert; I. Minchev

doi:10.1051/0004-6361/201117347

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Volume 541 (May 2012)

A&A, 541 (2012) A64

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Table 6

Parameters for MW models used for the forward integrations.

Parameter		MW1	MW2

Bar angular velocity	[km s^-1 kpc^-1]	60.0	45.0
Bulge mass M_C₂	[10¹⁰ M_⊙]	0.62	0
Bar mass	[10¹⁰ M_⊙]	0.98	1.6
Major axis	[kpc]	3.14	5.0
spiral arms’ angular velocity	[km s^-1 kpc^-1]	20	30
spiral arms’ amplitude	[10⁷ M_⊙ kpc^-3]	3.36	5.14
spiral arms’ pitch angle	[deg]	15.5	20.0

Notes. Both models have the same form and are characterized by the same parameters as the model used for forward integrations described in Sect. 2 (denoted as model MW1 here). In model MW2, listed parameters are changed (the rest of model parameters are kept the same as for MW1 model, see Table 2).

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