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On the behavior of stellar rotation in the solar neighbourhood

Published online by Cambridge University Press:  18 July 2013

Daniel B. de Freitas  and
J. R. De Medeiros
Daniel B. de Freitas
Affiliation:
Departamento de Física, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN, Brazil email: [email protected]
J. R. De Medeiros
Affiliation:
Departamento de Física, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN, Brazil email: [email protected]
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Abstract

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Rotation is a fundamental physical parameter in stellar astrophysics, playing an important role on the formation and evolution of stars. This parameter may also offer valuable information on stellar magnetism, mixing in the stellar interior, tidal interactions in close binary, as well as on angular momentum transfer and rotational breaking due to planets. The present work brings the results of an unprecedented study on the behavior of the distribution of the projected rotational velocity (v sin i) as a function of galactic position, on the basis of an unique sample of 14000 main-sequence field stars, along the spectral regions F and G. The vsini measurements used in this analyses were obtained from observations carried out with the CORAVEL spectrometers, with a precision better than about 1 km/s.

Keywords

stellar rotationsolar neighbourhoodgalactic coordenates
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 195 - 196
Copyright
Copyright © International Astronomical Union 2013 

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