Local kinematics of OB stars

Details Local kinematics of OB stars Local kinematics of OB stars

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..96..195p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 96, no. 1, Oct. 1983, p. 195-203. Research supported by the Coordenacao do

Astronomy and Astrophysics

Astrophysics

4

B Stars, Density Wave Model, Milky Way Galaxy, O Stars, Star Distribution, Stellar Motions, Galactic Structure, Hydrogen Clouds, Kinematics, Nonlinear Equations, Velocity Distribution

Scientific paper

Analysis of observational data of OB stars shows an excellent agreement of the density distributions in space ρ(x,y,z) as well as in velocity space ρ(x,y,ż) with the predictions of the density wave theory, the values for the density and velocity fluctuations are explained only by the non-linear theory. These theoretical calculations predict perturbations greater than ±10 km s-1, consistent with the observations for the velocity field. Thus one should disregard analytical treatments of the linearized equations since they predict maximum perturbations of ±5 km s-1. Another consequence of this is the fact that the Gould's Belt is not a local anomaly, but a local feature of the density waves. The analysis of observational data shows that the wave pattern is similar to that of the gas and dust.

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