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Metallicity and v sin i of B Stars in Galactic Open Clusters: is there any Correlation?

Published online by Cambridge University Press:  26 May 2016

F. Royer
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
C. Melo
Affiliation:
European Southern Observatory, Santiago 19, Chile
J.-C. Mermilliod
Affiliation:
Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
P. North
Affiliation:
Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
J. D. do Nascimento Jr.
Affiliation:
Universidade Federal do Rio Grande do Norte, Natal, Brazil
J. R. de Medeiros
Affiliation:
Universidade Federal do Rio Grande do Norte, Natal, Brazil
E. K. Grebel
Affiliation:
Max Planck Institut für Astronomie, D-69117 Heidelberg, Germany
A. Maeder
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland

Abstract

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We discuss the v sin i distributions of main sequence B stars in galactic clusters in relation to stellar luminosity and to cluster metallicity. We show that evolutionary effects and/or dependence of initial v sin i distribution on stellar mass are important, so that a much larger sample and a wider metallicity range are required to detect any possible metallicity effect beyond doubt.

Type
Session 1 Observations of Rotating Stars
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Maeder, A., Grebel, E. K., Mermilliod, J.-C., 1999, A&A 346, 459 Google Scholar
North, P., Royer, F., Melo, C., de Medeiros, J. R., do Nascimento, J. D. Jr., Mermilliod, J.-C., Grebel, E. K., Maeder, A., Mathieu, R. 2004, in Maeder, A. & Eenens, P. (eds.), Stellar Rotation, Proc. IAU Symp. No. 215 (San Francisco: ASP)Google Scholar