On the rotation of Gould's Belt

Details On the rotation of Gould's Belt On the rotation of Gould's Belt

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...363..154l&link_type=abstract

Astronomy and Astrophysics, v.363, p.154-158 (2000)

Astronomy and Astrophysics

Astrophysics

12

Stars: Early-Type, Stars: Formation, Galaxy: Kinematics And Dynamics

Scientific paper

Among the characteristics that define the local system of stars called Gould's Belt are the flatness of the system, its inclination of about 20° to the galactic plane, and its expansion. This has to be conciled with its age being estimated at 30-40 Myr. The model, introduced here to explain the persistence of the tilt of the system to the galactic plane, is an inclined rotating and expanding disk. The model is developed in the linear approximation, and the parameters of the model are derived from the observations. The result gives a reasonable set of parameters. It is pointed out, however, that a final picture must be based on realistic non-linear simulations adding self-gravitation and successive birth of stars in an interstellar cloud, expanding due to actions of young stars and supernovae.

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