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

0387362 - ASÚ 2013 RIV FR eng J - Článek v odborném periodiku
Jílková, L. - Carraro, G. - Jungwiert, Bruno - Minchev, I.
The origin and orbit of the old, metal-rich, open cluster NGC 6791. Insights from kinematics.
Astronomy & Astrophysics. Roč. 541, April (2012), A64/1-A64/11. ISSN 0004-6361. E-ISSN 1432-0746
Grant CEP: GA MŠMT(CZ) LC06014; GA ČR GD205/08/H005
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: galaxy * kinematics and dynamics * open clusters and associations
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 5.084, rok: 2012

One possible scenario is that the cluster formed close to the Galactic Center and later migrated outward to its current location. In this work we study the cluster’s orbit and investigate the possible migration processes that may have displaced NGC 6791 to its present-day position, under the assumption that it actually formed in the inner disk. We find that a model that incorporates a strong bar and spiral arm perturbations can indeed be responsible for the migration of NGC 6791 from the inner disk (galocentric radii of 3–5 kpc) to its present-day location. Such a model can provide orbital parameters that are close enough to the observed ones. However, the probability of this scenario as it results from our investigations is very low.
Trvalý link: http://hdl.handle.net/11104/0220259